But he admitted to putting the dildo up his ass all the way back in February 2009 (
https://sonichu.com/cwcki/BlueSpike_PSN_Chat_3). In the same month you can see him riding "Julie" cowgirl in a way that looks like he identifies with the female positions in sex. And who graphically describes homosexual sex like this for no reason if they're really so repelled by it? There are so many things from long before the idea guys like his love of feminine toys and cartoons... that's not directly homosexual, but come on, those interests in men are all strongly associated with homosexuality for a reason. It could also be autism but it adds to the preponderance of evidence that he's not totally 100% straight.
And his constant fervent denials of homosexuality while believing homosexuality is something that must be diligently avoided lest it be spread to him is exactly what someone with no self-awareness who has homosexual desires and yet believes they're wrong would do.
Yes, he had deeply ingrained homophobia as a result of his upbringing that kept him from identifying as bisexual for a long time. Chris is very inflexible and it's very hard for him to change his core values and beliefs. Probably the idea guys prompted him into accepting it but it didn't come from nowhere.