Your concerns are entirely unfounded though. We heard this same exact argument back in 2016: that same-sex marriage was going to be taken away and religious zealots were going to be granted the right to do a bunch of mean hateful stuff. Instead, same-sex marriage remains federally protected and religious freedom advocates are still under the impression that the fight for their rights isn't over.

Which would mean that Trump's 8-year plan involved rallying Christians for votes, pissing them off for 4 years, relying on them to re-elect him, and then giving into their demands. 

If it were to happen, it's not really a drastic change. If you're married in one state, why do you need it recognized in another state if you're just visiting? If you plan on moving, you have to refile and get a marriage license in the new state anyway. It's also not much different than what we have now: you could have a license for a pet or a weapon in one state, but another state will lock you up for owning either. 

How will you feel when gay life will go back to being like it was in the 90s? And please, I don't want to talk about trans, non-binary crap. I'm talking about the Lesbian and gay community.

Honestly if you don't want to talk about trans and non-binary crap then it sounds bringing back the 90's should make you a lot happier.