I commented on the thread referred to, and some did object to the OPs wording because it seemed to be not just about Eurovision being highly sexualised but an implied criticism of some sexualities.
When last on the thread it had become a much broader discussion about Eurovision itself and how it had changed over the years, but also about how queer culture has estranged many lesbians and gays by making it appear that all same sex attracted people are into fetish gear, and other "unusual" appearances.
At the time I stopped posting (late at night not upset by thread which was interesting on many levels) a few posters had turned up (again) with what seemed to be wanting to make personal criticisms of OPs language.
When I saw the thread had been deleted I just assumed it had all go too personal and a slanging match.
Which was a shame as the thread had covered many aspects of eurovision, watching tv as a family, queer politics, why is the UK entry always so bad, and so on.
So not sure that the assertions that thread was deleted to stop "free speech" is correct.
Best to contact @MNHQ and ask them, because it is much better that we all know / understand what they think the limits are.