MuseScore had a big UI rework with MuseScore 4, with an excellent video about the behind the scenes by Tentacruel (https://youtu.be/XGo4PJd1lng).
Although not sure if it caught people off guard as I’m not a user of it.
Jokes aside, I find that attitude not very healthy. Whether you want to call it open source or not, as I said, it’s far from proprietary, and certainly more than just source available. Dismissing it for that reason is quite unreasonable.
It is not. FUTO calls it “source first” which just means “open source but with rules against bad actors”. Certainly far from proprietary.
High School without other people sounds absolutely awful.