DeSantis is much more anti gay than Trump, which is probably also a factor as most under 30s, even most under 30 Republicans, have at least one non straight friend.
There are rumors that DeSantis is bisexual/gay, so that may be in line with the Aaron Schock type of overcompensating.
If you are obsessed with what other people do in their bedrooms, you probably have some sexual skeletons in your closet. This has been known for ages. I've lost count of all the bigoted conservative politicians who turned out to be not exactly straight themselves.