I’m not them but for me “social media” in the colloquial use has some sort of discoverability and some functionality to put out a piece of media publically in a way that can then be discovered. (Note that this isn’t my entire definition, just the part where I feel email is disqualified.)
For emails you need external services to find, subscribe and/or manage things such as mailinglists to sorta approach this behavior.
Different person here.
For me the big disqualifying factor is that LLMs don’t have any mutable state.
We humans have a part of our brain that can change our state from one to another as a reaction to input (through hormones, memories, etc). Some of those state changes are reversible, others aren’t. Some can be done consciously, some can be influenced consciously, some are entirely subconscious. This is also true for most animals we have observed. We can change their states through various means. In my opinion, this is a prerequisite in order to feel anything.
Once we use models with bits dedicated to such functionality, it’ll become a lot harder for me personally to argue against them having “feelings”, especially because in my worldview, continuity is not a prerequisite, and instead mostly an illusion.