For starters, if Hashem calls something an abomination, then we should concur. It's very logical.
I don't profess to be an halachic authority, but I'm just not sure that quite cuts the mustard. So far as I'm aware, HaShem proscribed homosexual
relations. That the Torah may have referred to relations as an abomination does not ipso facto render activities short of that activity an abomination of the same or even similar magnitude, your own feelings of logic notwithstanding.
Either you have a source that two men having feelings for one another or even romantically holding hands is an abomination--or you don't. I don't know where the science is on this currently, and frankly, it doesn't really much matter, as the fact remains that some people have a preference for the same sex. G-d recognizes this and says, essentially, "I get it, you have these feelings, it's a struggle--just like many things in life--but relations are still off limits."
It would seem to me that what's really going on here is that you are projecting the anger that would more appropriately be directed inward (for failing to properly supervise your children -- I mean, seriously, brother, who lets their children run amok on YouTube??) and instead projecting it outward (on same random YouTuber who apparently comes down on this issue differently).