The vast majority uses 1080p and only a small portion is at 2k or 4k. Main reason is the performance that has not reach satisfactory levels for mainstream GPUs at those resolutions.
4k is definitely not what "most players" use.
actually I think "most players" are still @1080p
2k is absolutely satisfying and you're still GPU limited at that resolution.
at 4k this only gets worse.
The vast majority uses 1080p and only a small portion is at 2k or 4k. Main reason is the performance that has not reach satisfactory levels for mainstream GPUs at those resolutions.