I'm not sure Trigglypuff knew or cared what was said either, she was just there to throw a temper tantrum and think doing so was "activism", along with a few other rabblerousers.
here's a clip from just the beginning, where Milo's been introduced and about to start speaking, and you can hear her yelling before he said exactly what you'd expect him to say:
https://youtube.com/watch?v=m8eVe0Skigo
edit:
the whole thing, if anyone has an hour and a half to kill. sounds like Triggly was booing the moderator/host/whatever right from the beginning.