IMO it’s not the job of the GM to tilt the game system itself towards the players, but rather to balance encounters and challenges to be beatable, and then see what happens right alongside the players.
IMHO, the GM’s role is a lot fuzzier than that and is wholly dependent on your specific party’s (and their own!) preferences. I’d say this is simply what you prefer to do as a GM, rather than what a GM should be doing.