The Pharisees also deny the Athanasian Creed because you know they're heretics.
No straining of the gnat, that's what your buddy attempt and failed at spectacularly.
You should probably know if your buddy actually is a Christian or not because there is no friendship between the kingdom of light and the kingdom of darkness. You would kinda think if dude is really your friend you would try to you know talk him out of being in a cult that outright denies Christianity and will guaranteed get him sent to hell. Then again, I mean, apparently I'm the only one that believes in God enough to tell the other guy not to get a tattoo of literally "Heretic" on himself, like wow, whole new levels.
I think you're full of shiite... I'll be nice and leave it there. I feel for folks like you. You have nothing to offer but a closed room full of condemnation. You are the kind that makes people walk away and never come back. "Hell" as you put it, might be a respite compared to whatever it is that you have to offer.
Have a good day!