I'd vote against that too (not that I have any illusions of having a vote in this). In AnisEverRise's case: let's say there was such a rule. What would you want the forum to do about this? Deleting his post or banning him seems unnecessary to me. He received a few neutral tags, I'd say that's enough for pretending he took a photo that he didn't take.
I agree with that, because despite the fact that people might lie about some content to be their own but they actually aren't, but once they are caught for lying about it, they shouldn't be banned, either neutral or negative tags should do the work. I'll give an example about this.
We know that AI is developing at a rapid pace, sometimes, you can't even tell whether a content created using AI is actually AI-generated or an original. So, when there are contests on this forum where people need to submit designs and stuff, if someone uses AI to create a design and submits it, and they would obviously not say they used AI for it, but if they are later caught for using AI to participate in the contest, banning them shouldn't be the right thing to do, but they should surely get either a few negative or neutral tags telling everyone that the person is a liar and not trustworthy at all.