It's not about the different in game mechanics, but culture. The esports culture in CS is by far one of the most taxing. the top val teams played 17 matches (loud, getting to finals of lockin) matches matches since champs. Champs was last September.
Navi have played 47 matches since September 29th.
the point I'm making is the setup for Val isn't as bad as it's counterpart. It's honestly one of the more relaxed t1 esports. Teams are ofc going to fight to make the event. CS teams dont just think "oh well, we'll qual for the next event".
These esports players are playing for the achievment, not the prizepool. ofc the prizepool is a plus, but they're already getting paid absurd amounts. this is the t1 scene btw.
With the game mechanics being different with flashes etc. That's what scrims are for, and what coaches and analysts are for. A val player playing 8-10 hours a day isn't any different than a CS player playing 10-12 hours a day. They're both putting in server time for their respective game. The semantics of meta changes isn't relevant to having breaks between events. If we look at meta changes, compare with league. Where T1 have played over 100maps since September. There's countless comparisons that show val is one of the more lax esports schedules out there.
The main thing that burned out CS pros was the travel. They'd go to an event, travel ,play, travel, play. Especially NA pros in EU. They'd spend majority of their time travelling and going from event to event. Past 6 months val players have been to 3 places so far. Brazil, (where their respective league is held), and Tokyo.
I'm just adamant that the current schedule as it is, isn't as big of an issue as it's made out to be.