Yeah.

Discord needs to moderate, so they ban and therefore conclude their legal obligations.

If it was CSAM and discord thinks it's bad enough, they will probably forward the information to the authorities.

Now if the authorities think it's worth an investigation and give it the proper priority, they will start one. If the investigation concludes and they still think you've done goofed bad enough, they will persue you under criminal law.

See how many ifs there are and how many people have to sign off on it? There's quadruple human review at minimum in there, and there's no way they think they can win on those charges when the evidence if gd damn popcorn.

Also, you can appeal a ban. I got auto banned on discord about 2 months ago and I appealed because I know for a fact I did nothing wrong - I was literally asleep and my last messages did not even contain profanity. I was so mad cause that account is important to me. They reinstated it - to their credit - in a matter of hours. Still, could've done without the heart attack.

TL;DR you're more than safe as long as it wasn't actual CSAM.