I lack any faith of the heart [captioned screencap] [crossover] [star trek] [oc]

Oh wow, you weren't just joking!

I'm not some kind of nerdery slut! I like Stargate

This is probably one of those jokes that you will not find funny if it has to be explained, but here goes:

All but one Star Trek series uses an instrumental orchestral piece during the title sequence. The outlier is Star Trek: Enterprise, which instead uses a cheesy power ballad. This has made a lot of people very angry and been widely regarded as a bad move.

So this image is making a joke about someone turning off (or skipping) the title sequence right when the vocals kick in. The "worshipping the devil" part doesn't necessarily apply to this in the way that it does in the original. But I guess you could find humor in someone finding that theme song so revolting that they figure it must be the work of a devil.