With this patch we will also enable on official servers a feature introduced with the December update which limits the visibility of players in the player list. By default, players will be listed as invisible unless they choose to participate in chat. At that moment, they will be visible in the player list for the next 5 minutes.
This information is from PC patch 30.01.2020
I will suggest change too, visible players nick on the steam. If we check servers list and more details we can read who be on the server despite such a solution in the game. I think its good idea if steam and battlemetrics don’t give information about players played in this server in the moment.