I’ve played some games where the hero gets all of their tools from the outset, and it ends up being really hard to figure out when to use each one. Comparatively, when you slowly unlock things during tutorials, you’re building a mental framework of how combat should go, and on each unlock, get some time to work out how that fits in.
In fact, it’s something I think is an issue with fighting games and their competitive-only mindset. People play the 20 tutorials in quick sequence, get confused by a Reverse Upper Back-Airdodge-Cancel input that’s only going to happen in high-level play, and feel overwhelmed.