IA is quite slow so I didn't read every snapshot, but I'm not finding a huge thread full of attacks.
Original bug report is short. It's somewhat poorly written and hard to understand. They seem to be saying that the frontend's flatpak binary package is itself detected as a virus (By another scanner? It's not clear.) and they are suspicious of it. They don't outright accuse the author of making malware but do seem to imply a suspicion of it. It's not written in very friendly tone, but I don't see anything that would be described as personal attack. They only reference the author is in a single sentence fragment, "[.] The program[']s author/owner on the official LINUX download site seems strange also, in retrospect." I don't know if I'd really call that an attack. It's probably most correct to interpret that language as as reference the author's profile on flathub (?) as seeming strange and not the person themselves as seeming strange.
There's a reply from the author. To me, it seems a bit overly defensive. They seemed to not realize that the original post was not about the frontend detecting false positives, to which they correctly reply that this would be an issue in the underlying ClamAV software and definitions, but rather that is about the flatpak being detected, possibly correctly or incorrectly, as malware itself. Which might ultimately be blamed on the virus definitions as well, but could have other causes, such as the flatpak generation process being victim to a supply-chain attack.
After that ticket is closed, there's a new one from the original reporter. Where we have these comments from the reporter of the issue:
"Forget this issue entirely. If there is problems with his work- contact him directly, when he supplies more direct contact information."
"Whatever you wish zynequ. I did not not mean to piss you off. The issue is closed in my mind. Your project is off of my laptop disk. Let it rest.
Goodbye."
The first is edited. I don't see a record of what it was originally. Again, not what I'd describe as a personal attack. More like a half-heated apology.