I'll start by saying I haven't watched those videos, yet.
That being said, stating that my statement verges on "homophobic" is severely misrepresenting the meaning. By grandiose statement I was talking about a biased representation, where you state a character is LGBT because they act a certain way. Like if a male character acted very flamboyant, but wasn't evil, cause apparently that's a thing, but most people would presume that character is gay based on stereotyping, which is a bad thing to do. How someone acts doesn't necessitate their sexuality. Having characters show signs of LGBT is fine because real life is on a spectrum. Someone could be homosexual but then enter into a heterosexual relationship and vice versa.
A good example of what I mean can be found in the anime Yuri on Ice. None of the characters have any perceived sexual preferences, and even early on the main character is considered heterosexual. But as I'm sure most people are aware he enters into a relationship with a man. That's why the anime was praised for it's realistic expression of LGBT individuals. They weren't just a stereotype played up to explicitly make people aware "hey look at me I'm LGBT". Even the one character in that anime who could be considered a stereotype is a subversion, or maybe a double subversion, because it's not part of his sexual preference but his personality as a skater.
Another good example is from the new She-ra reboot. The showrunners actively said they weren't sure if they would be able to portray the relationship they wanted for Adora and Catra, so they added in subtleties that could go either way. Hints at a possible future relationship or just a very deep friendship. This way they could have the characters just be themselves, and not anything that needed to be "altered" later on.
One good example, "turned" bad, can be found in the new Voltron. Shiro is gay, he was written that way from the start. And people were "okay" with that. What they weren't okay with was when things were "added" and then glossed over to show he was gay. Specifically the ending were he gets married to someone we never even see him interact with, that we as the viewer know, because other characters do interact with him. Those moments were superficial, just to show "yes he really is gay". Given the context of the show, the viewers didn't care about him being in a relationship. What they did care about was the promise of showing these relationships and not delivering.
So do you see what I'm trying to get at? Representation is good, no question about that. But it has to be realistic, it can't just be there because people "want it". People shouldn't see themselves in fictional characters because their sexualities align, but because of their personalities.