Modding is a pretty difficult thing to upkeep, especially with those mods that are more involved with new features and mechanics. Many modders start modding the game to make the experience better for themselves and their friends and are kind enough to share their creations with the public. After a while they build communities around said mod and continue to apply their craft out of their own desire to give back to the community.
Overtime they tend to focus more on their mods more and more and even stop playing the game entirely and work on their mods exclusively or have moved on. This is usually not a great sign that the modder is going to stay around. This isnāt meant as a critique or anything, just an observation.
Eventually they want to move on and do other things. Whether that be playing other games, modding other games, or making their own creations. Modding doesnāt pay bills, but game or software development does.
But thereās a ton of different reasons why modders take off. Usually during major updates are the catalyst for moving on as it means a bit of work to get everything in line. Sometimes only a recompile is needed, and modders will be able to see that when the devkit is available early enough. But if not, they have to make a choice on whether to stop there or move on. Of course they can move on at anytime and leave it to fate, they are righteous to do so. They owe nothing to people who use their mods since everything is granted for free.
Sometimes game changes in ways they donāt agree with. I remember when there was significant changes to items and thralls a while back that required major reworks of most mods. The idea behind these changes was to change the foundational parts of those features so future updates would be easier on FC and easier on modders. But it required ripping the bandaid off first. There was no way around it. But if a modder was already close to burnout, or looking to move out of CE modding, then that would have been a big catalyst.
Update frequency can also wear out modders. Having to recook their mods several times in a short span of time can be an issue for some modders. This is something we more or less accept. Modders do not come before game breaking bugs, or future features.
On occasion a modder gets frustrated with FC on direction of the game or how much or little they have access in the devkit and its features. Or when the devkit updates are made available. Being as modding is an advertised feature this is something FC should improve on. Each update they either do well here, or not well. Age of War had some friction, but it looks like Age of Heroes is a bit more modder friendly as the devkit was released just a few days ago.
One of the nastier reasons modders burnout though and probably the most common, is how the community treats them. When you first start your modding career in CE. One of the first bits of advice that is always given is to turn off Steam comments. The reason being is the amount of vitriol and negativity players will display. They will complain about content in your mod. Content that isnāt in you mod. That you update too frequently. That you donāt update frequently enough. That your updates are at the wrong time of day for their server. That their are at the wrong day of the week for them. They will have bugs and expect you to fix them, even though its another mod that is outdated, incompatible, or abandoned. Basically you are blamed for every issue outside of your control. And then they will feel entitled to tell you what to do with your mod.
But its for this reason all major mod authors tend to have moderated discords where they can control the sort of comments and critiques. Because at the end of the day, they are doing this at their own pleasure, not the ones of the players. But even with those measures it can get tiring to deal with it on an everyday basis and the drama that comes with it as players make up theories, gossip, slander, and do the things players like to do when theyāre bored.
But to put it shortly. We always lose a few mods with every major update. Servers should never build their server communities around specific mods unless they themselves create and maintain the mods themselves. A modder can leave at any time for any reason. They may do so voluntarily and move on, or involuntarily because of outside reasons. But that is always the burden on the shoulders of any server owner. They should always have a contingency plan to vacate a mod at any given time. That is their responsibility, not a mod authorās, and not on Funcom.
I can pretty much say that it is not anything done with intent, but yet the result is still the same, the āold bugsā had a tendency to come back in time. Not all of them, but some of them (and usually the more annoying ones).
If you were truly an āidiotā you would not have realized what @CodeMage was saying and taken the time to reflect upon it. 
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