I suppose Zendaya is straight. I never hear her talk about dick either.

If you watch this interview...
...you can see that when he says he tought church said being gay was all about sex and sex not for procreation is evil, it is important to him that him being gay isn't reduced to just sex, which explains how he might not feel comfortable talking about it or might even still be figuring it out.
Anyway, being gay isn't "liking dick". It's liking men. Lots of women love men, love sex, but aren't obsessed with dick, specifically. Like, musing about it, finding it beautiful... I am a bottom and I hate getting dick pics!

I feel attracted to the man. Granted, a weird dick can turn me off. But the most beautiful cock wouldn't turn me on if the man himself wasn't attractive to me. It's possible to like sex, but not necessarily being obsessed with dick.