When I was a child, Smear the Queer was a game all the boys played. Fag was a commonly used slur. When I was in high school the state of California told gay couples to go fuck themselves. Societal progress is a wonderful thing to see.
I don't think any of them would qualify as homophobic, it's just more a case of hearing something so much that it creeps into your lexicon and comes out by mistake sometimes in a moment of distraction or emotion. It took me a while to unlearn it myself because it was extremely common in the 90s at my school (even among guys who later came out as gay, I guess you have to fit in).