The YouTube community is so despicable that instituting any kind of democracy is terrible idea.
YouTube put out the comment because several Prominent LGBTQ Youtubers noticed issues. Its not YouTube releasing a press release targeting LGBTQ for a insidious reasons.
That said Restricted Mode fails because like so much of YouTube its automated. Community Flagging etc. can lead to things being considered restricted and the way the internet is lots of shitty people can spam flag complaints
The kinds of people who leave YouTube comments should have zero influence over which videos are accessible.