As a regular player there for a number of years, I disagree. Plenty of people were still playing as Cops and Robbers. I'd say at least 2/3rds of the players, the majority.
The server died because a huge amount of Admins disappeared to other servers (NG, FiveM etc), so there was a period earlier in the year where unregistered idiots using aimbot cheats were regularly screwing things up for everyone with no Admin around to fix the problem. Unregistereds would come on with aimbot hacks with the goal of getting everyone to quit. A lot of regular players left during that period. And then you had a few idiot regular players realised they could get away with using hacks and cheating too because no Admins....so that put even more people off playing.
By the time Admins started to reappear the damage had already been done and much of what was left of the player base had also switched to other servers.
So really it was the exodus of Admins which ultimately led to the server going downhill this year. But right up until the end it was still mainly a Cops and Robbers game. Well, until the closure got announced a couple of weeks back and most people gave up on the usual gameplay and just went a bit crazy instead.....and then it did mainly become a RDM'ing mess of a game.