It's because the uncanny valley of his real life appearance is just so offsetting. This one just looks like a normal digitally distorted face so you associate it with something more natural
Jesus christ, dude. I'm here scrolling through posts at 2 AM in a dark room because I'm having trouble sleeping, and this picture scared the shit out of me. RIP my chances of going to sleep any time soon.
“Threads” is a new thing and allegedly he intends to have it link to the fediverse.
The thing to worry about is that it is an attempt to get rid of the Fediverse via Embrace, Extend, Extinguish.
Since Threads is directly tied to Instagram, it may be an attempt to have the majority of fediverse users use Threads, because only Threads is also tied to Instagram. Once having the majority, defederate and keep the majority of the users that couldn’t otherwise be bought.
This is hearsay mind you. I am repeating what I have read. Please feel free to seek more accurate info.
The Tl;dr: Zuck is scared of unbuyable competition and we should NOT welcome his product in.
Side note: I can’t see the word “Threads” like I can Facebook or Twitter. Threads already exist as a term for a certain format, not a social networking service.
Metas new Twitter competitor Threads claims it will connect to the fediverse eventually, it doesn't yet. If Threads does then I expect he'll use the old microsoft "embrace, extend, extinguish" tactic. Add extensions to ActivityPub that only the the threads client and server support in the hope that Threads client becomes the dominant way to access the fediverse then when all the clients give up, he can drop support for it.
It's a warning sign that the wild Markius Zuckerian species are known for when feeling threatened. It's common to see this phenomenon when its food, commonly referred to as "Advertising Potential", is at risk. The most recent occurrence of this was when its prey learned that its latest trick, the Metaus Threadsian, was seen for what is actually was: a cheap scam.