I agree. There are no doubt players who have only have time to play once or twice a month, love their experience, and consider it progression just to get their 16 dungeons done and feel like they've fully unlocked a class they like. Resetting that person will make their meager efforts feel futile. They'll feel like the game is telling them "move fast or don't play", and they'll only have one option. I fear a lot of players, when told to start again at square one, will opt for a different game.
I think there is a world where a reset could be incentivized only for the sweatiest players. Maybe a reset earns you a buff that only matters at the highest level of play. The try hards will need to take it, but the casuals can keep trying to get through Adept.