Waves of vac bans plus the few hundred vac bans handed out on days without a wave is a pretty good indication that cheating is a problem in CSGO. A lot of days have 150-250 game bans as well.

We can't know what percentage of vac bans given out are on CSGO vs another game but based on the sheer popularity of CSGO and how easy it is to get some kind of decent cheat it is safe to assume hacking is a problem.

A lot of people though call hacks on anyone who's better than them or hits a lucky shot. In many cases saying it is an excuse to undermine the skill level of other players is correct.

Personally I think CSGO has a community problem more than it has a hacking problem. It has more hackers than people are used to or have likely seen in other games they play. The fact that VAC is questionable in its effectiveness makes people even quicker to blame, uneasy, and unsure if someone is hacking.

On top of that you've got people who smurf, derank, and grief which in many ways degrades from people having a positive experience in CSGO. If you get beyond negative shit in the game you find yourself on places like reddit, hltv, the steam forums, or other fringe offshoots of the community that become very insular echo chambers of even more negativity towards other members of the player base, the game, and its developers.

Additionally CSGO does very little to teach or show players how high the skill ceiling goes. This can be placed on the devs and how the game totally lacks any kind of tutorial or learning system for the most part. Outside tutorials or help from other members of the player base if often times wrapped in negativity or dick waving of how bad you are and good other people are before they are willing to help. If they even help.

None of those are good things. Cheating is easy to blame with direct results. You ban the cheaters and the problem is solved, at least for some modicum of time. However all the other toxicity surrounding a large part of the game, as well as often times poor explanations on how high the skill ceiling goes makes it easier to call people cheaters, undermine others, and generally not improve themselves or even a small part of the community of the game they play.