It's been a while since I've caught a member of a signature campaign, but this user seems suspicious and all his posts appear to be AI diarrhea. I'm surprised he's gone under the radar for so long. It's clear that some kind of humanizer is used, or the user is doing it himself, as there are spaces " ", missing punctuation marks and scattered mistakes along his posts.
Looking back to his posts, the latest ones are the most suspicious ones, with a few standing out from the rest. My guess is that he's either using AI + Humanizer or he's letting Quillbot/Grammarly do the writting for him.
Ohhhh! Really?
This is surprising one for me by the way.
Let's talk about this. First one. You mentioned (humanizeai.pro) I just opened it up and here is the result.

Let's talk about the second case. You mentioned GPTzero yes it is showing 100% but I don't know how? If I use humanizer like you said so it can bypass this too. I wrote it by myself. But still I don't know why it is showing this.
And in second post you mentioned only GPTzero.
But I checked it on phrasly too which you mentioned in 4th post case and I googled it and found phrasly.ai. which also bypass GPTzero too but here I did not find any AI detection.

And in the third one. I took ZeroGPT link from OP and here is the result.

And you mentioned deepseek here I did not find it from OP and also not from Google.
In fourth case phrasly is only show one sentence as AI. Is this standard to say my post is AI written post? I do not think so.
At end... That was just surprised one for me. When I saw this post.
