I know that feel. I used to bring them to parties at the SDM in older versions and they'd even join in on you playing boosting the effect, now I don't really bother because they're usually the only ones upset by when you play music.
Currently at 376/387 myself.
Sometimes RNG is also against you, or as I mentioned before, sometimes 2hus are in a bad mood during the party, one of many reasons to get the bad moods out of the way by listening to their complaints before the party gets started and you start playing music. (Mind you I don't know 100% if that's a contributing factor mechanics-wise, but I figure it doesn't hurt.) Though certain personality traits can cause them to be likely to toss stones as well.
You'd think there'd be a bigger penalty if stoned by the 2hus with more focus on super strength.
YFW Sooks or Yoogs toss a stone at you. (Or rather, YFW no face or head.)
If you newgame+ every version, you don't have to worry about musicians catching up to you, lol. That is kinda a sucky thing to have to worry about though. I feel like there should be a trait girls you've personally taught to play music have that reduces the chance that they'll stone you. If a student and teacher are equal in skill, the teacher is usually still seen as or treated as the superior over their student, due to experience at the very least irl.
Then again, I don't know exactly how much music completion actually helps. If 376/387 isn't enough to notabley reduce stoning, seems like it's not strong enough. Maybe one or both of those things could be addressed. I also don't know if music success is fortune based or just regular rng based. Maybe eating some Lucky food beforehand helps?
I've started trying to finish out collections now too in my newgame+ Just need the autumn only fish and the new moon fish. I'm not sure when the new moon happens or when the start and cut off time for that fish are though. I'ma be pissed if I miss it, the calendar doesn't show new moon days does it? Kinda sucks that there are some music scores that require you to fail quests too, I hate that shit. Achievements that require you to fail/play badly are always terrible.