[Kaveren]

I think a Riot employee stated that cheaters would try to start cheats before the anticheat starts, so the anticheat running at all times is trying to prevent this.

CS:GO has a lot more hackers than games with more intrusive anticheats like Overwatch in my experience. Only solution is an invasive anticheat, machine learning, and trust factor systems.

[SpaceManNabs]

I have not seen anything conclusive on CSGO having more trusted players playing with cheaters than overwatch. My anecdotal evidence for both games also goes along with this.