What most social media communities view as odd couplings of one more / one less attractive partner should keep their more aggressive opinions to themselves and just be happy if the couple is happy. Its tough enough meeting the right guy, then putting in the effort to maintain a good relationships and then fighting to get their union recognized and accepted. .
Of course, there will always be some measure of criticism which is understandable when ones relationships goes public online or off - but in general is the couple is happy celebrating their relationships, it is better to spread positivist and goodness if no harm comes from it.
The rugby player Sam Stanley probably has gone through a heckuva lot of flack for being with his fiance, but I see much less vilification of Tom Daley and his now husband.