I'm much much younger than John23832, but I definitely recognized a lot of the same in some of the gaming communities I was a part of in the mid to late 2010s. There wasn't quite as much racism (at least in the places I hung out), but there was plenty of sexism and homophobia. It wouldn't necessarily be explicit, but there were lots of offhand comments and jokes. That's how racism (and sexism, homophobia, ...) tends to present itself; it's a lot more subtle than people straight up going "I hate ${group}".
However, I will say that I first got properly exposed to tech/computing by doing FIRST robotics in high school (2017), and those competitions were very diverse. Everyone I met through FIRST (students and mentors) was very accepting of everyone, regardless of gender, race, sexuality, etc. My college experience (classes, competition team, internships, etc) has thankfully been more of the same.