MadExistence saidPublic proposals are terrible. I'd say no just on principle
Even a classic one-on-one, bended-knee proposal with a ring, which I once actually got myself, puts the recipient on the spot. Fortunately I had no doubt about saying "yes", but replying "no" to this lovely guy would have been awkward & difficult, if I had rejected him. Maybe it's why some guys do these proposal stunts, to coerce an acceptance.
I did see a home video on TV of a flashy proposal that did get rejected, and the woman wasn't too gentle about it, didn't even smile, actually acted annoyed. Naturally the guy was crushed & humiliated in front of a big crowd, I wonder he didn't later kill himself, or at least leave town.