If they have no proof prior, they will absolutely wreck you with a comment like that linked to an account you own. That’s a confession, which you made, it is idiotic as you gained nothing admitting to it.
Only because many people don’t care, doesn’t mean it doesn’t matter.
Also it’s no proof that any piracy took place. It would be a different thing altogether if they already had evidence and you confessed to it, but as is, not everything said on the internet is true. Here, my “confession”
I broke into Area 51 on September 5th 1997 at 07:43 AM and I took photos of a top secret spy satellite program meant to track UFOs.
The fact I said that in a comment on Lemmy doesn’t make it true.