1. I don't see how continued discrimination against gay people into recent decades (and, indeed, the present) supports your claim about public attitudes towards 'age gap'. Unless you're suggesting that there's some kind of morally significant link between the two. In that case, maybe you can explain why the age of consent for girls (16 between 1885 and 1994) needed to be raised from 13 in the first place.
2. In a debate over equal rights, assertions about the moral sentiment of some presumed majority are completely irrelevant. Appealing to legality and the democratic process and in the same breath to some vague idea of mob 'acceptance' is hypocritical. You can't have it both ways.
3. Even if discriminatory age-of-consent statutes were relevant, it's not 1994. The age of consent in the UK has been 16 since 2001 -- that's one third longer than the preceding period that you suggest reflects current public sentiment.
> lifestyle choice
Oh.