The teacher could have made the video private on youtube and just move on - Eton higher-ups asked him to remove it, as far as I know.
Hate masculinity is a strong conclusion - but not necessarily incorrect. Don't you find it a little odd that Eton, an all-boys school of academic excellence, should view masculinity with apparent disdain. If Eton really feels this way the logical next step would be to admit girls and make it a mixed-sex school.
Women have the rights to go topless in certain parts of the West but they have to cover their nipples (see the freethenipple movement ) - this is a First World issue if ever there was one, lol. You'll have to give a better example than this. It's a simple fact that, in the West, women enjoy the same rights as men (and rightly so).
The above is debatable - what's debatable? The ironing out of many wrinkles or not being able to turn society upside down and expect to thrive? Both points seems pretty clear to me.