odd, out of the big 4 thrash bands they're the one that had the least issues with "Satanic Panic" in their reputation. Slayer was the one that got accused of it the most.
I only really found issues with heavy metal music where the lyrics were too intelligible without looking up and would prefer not to listen to songs where I knew the subject matter was something more specifically Anti-Christian or was directly against God. Probably the first "hard no" for me was Nine Inch Nails though that's not really heavy metal.
As odd as it may seem, Death Metal's vocal style made discerning lyrics almost impossible without looking up, and I just never bothered, so it was just fast, loud, intense, adrenaline pumping walls of sound that to me are exciting and make me want to air guitar or air drum along with it.
I almost feel like the only way to make it "bad" or particularly dangerous to me to ditch it, IS to investigate the lyrics, though that could be exposing myself to spiritual attack.
I mean it could be similar to when I could hear Metallica lyrics and discern "oh this song is just about having nightmares when sleeping as a kid, I can relate to that" or an Iron Maiden song "oh this is about fighter pilots during world war 2 fighting the Nazis, that's kinda patriotic and exciting", but it's also quite possible to find out a song does have overt Satanic themes and then it becomes much more dangerous.