well there arent many games like cs with faceit to make a comparison but every other big competitive game pro players seem to be more or less content with matchmaking.
I know nothing about dota, but doesnt everybody just use matchmaking in that game? CS probably has the worst ranking system out of any big game, I think i remember seeing it counting bomb plants/defusals and MVPS playing a significant part in the formula. Incredibly out of touch system.
Most people who use faceit are paying for the better elo system and anticheat and the other factors that cause players to act differently are just a result of having to pay.
Plus people paying would make people more toxic if anything, feeling like they are wasting money when they get a bad teammate.
And yea they honestly should just use 128tick, the ammount it would cost for them is so insanely insignificant. Excuse of bad pcs would make no sense because they are porting to source 2, even then that was an excuse back in 2012.