From what I've seen (i'm not a stan so idk), the boys lied about their ages on BOTH their profile and to him. also, all of the straight people claimed they were gay and then screenshotted the messages to make it seem like James was a predator. im pretty sure a few of them even apologized.
It seems like the straight guys who were involved with him more heavily was trying to figure out their sexuality. Which there s nothing wrong with that tbh. But I guess when they realized they weren't gay or bisexual and they tried kind of moving away and telling James this he didn't take it well and was trying to force shit with them. (That's my understanding of it).
His general behavior with straight guys though, who are clearly straight or in a heterosexual relationship is messed up. Going to their DMs and flirting with them. Making them visibly uncomfortable or with them or their partners expressing discomfort with his actions.
Also, the minors lying about their ages isn't an excuse. From what I saw they had their ages up on their social media platforms so even if they did lie James had a way to know their age. The video even addresses this as a shitty excuse and shows that you could easily figure out that these guys were minors. But the guys themselves also said they did not lie about their age and they're uncomfortable with James's advancements on them.
So far it's mainly hearsay but given that James does seem to know these guys and didn't have any excuse other than they lied about their ages. I don't think he has much backing in these cases. To top it off the Dolan twins are both straight and one of them was constantly getting flirted with by James and you can see his discomfort in a couple of videos.
James has a history of fetishizing straight men and seeming to hit up random strangers on the internet who also are minors. With the number of accusations and this seeming to be a repeated thing, I don't think it should be brushed under the rug and ignored because the original thing that came out was coming from someone who was manipulated into doing it in order to ruin James Charles reputation. But once again a lot of things stated in that video were never disproven. But they were written off by so many people.