Well, that comes down to what I said above pretty much.
They have a pretty long list of actual bugs that occur with the native features of the game.. @Kikigirl has been keeping quite good track of them too on here in case you want to check those out 
here’s one example thread
As I previously mentioned they are also running Conan on limited manpower atm. They keep referring to them as “team”, but honestly I am fairly sure it’s a single developer on it and might not even be full time - though this is my speculation.
If we put the above two things together, you’ll realize that even if there was a “simple fix” (more on this below), the bugs that are actual parts of their game most likely take priority over fixing deliberate interference via external software.
Now whether everyone agrees with that is ofc another matter, but at the end of the day, it’s kinda like.. If a restaurant doesn’t have food, the fact that the music is bad becomes a secondary issue.
As far as simple fixes go, sure, a lot of things have very simple fixes that can be done in 5 minutes or so each.. The issue becomes making sure that it’s indeed the correct 5 minute fix and for that the developer needs to look at the grand scope of things.
For example I already mentioned things above that would require my simple solution to be expanded. like the fact that it would prevent quite a few mods from working all of a sudden unless they add a setting or figure out a way to interact with them better as a lot of them rely on “remote looting” or pulling items from chests to craft etc.
This might make the proper fix quite a bit longer than 5 minutes once they finish considering all the other systems it could potentially effect, sometimes tiny changes have quite serious effects in systems that don’t even seem related, which needs consideration.
Afterwards they would also have to test these changes and catch any issues with it in time to come up with a “fix to the fix”..
Overall, what might take me 5 minutes to casually throw together (even I made a mistake initially and quickly replaced my original picture after posting) takes probably just as much if not less to the actual devs, the problem is that they need to follow proper procedure and all of it needs to go through the whole process, which simply makes even simple things take much longer.
Hopefully that explains it a bit better.