You do realize that most -if not all- Satanists come from a toxic religious backgrounds, right?
We've been programmed to think that there's a limit to what someone can think or do, and that there's stuff we're absolutely not allowed to do.
Yes, if OP took the time to study the JoS website, they would've already known that nothing is prohibited in Satanism. But they could be new and probably has only recently started reading the JoS website, but they could be just so curious to know about having tattoos, since it's a sin in islam and probably in christianity too.
There will always be newbies asking the most obvious and silly questions (at least obvious for us, the more advanced ones), and sometimes they will be the most annoying questions, I mean there's literally a very long post discussing having tattoos just few scrolls under this post.
Nonetheless we still have to be patient, and we need to get used to it.
If you think this is annoying, just imagine what the gods feel when they teach us stuff. For us astral projection might be very complex to get the right idea about. But for the gods, it's probably like teaching a kid 1 + 1 = 2.
Have some patience.
Hail Satan!