PS: The fact it is hard to talk find sources is because it was all shut down.
Ultimately all of what these "experts" say is distilled by people in the media and shared through twitter, HN, reddit, FB and more.
During this madness, all the biggest doomsday people in my circle of "real" humans would feed me reams of NYT and Atlantic articles as their "sources". If I fed them some academic article that goes against the media narrative they'd dismiss it as "not peer reviewed" or "publishers were doing a flawed study". Ironic considering almost all of their sources had all the same major flaws as whatever I provided.
But more importantly they "assert" natural immunity is being ignored by scientific journals, but provide no evidence. Even worse, they then go on to cite studies from prestigious scientific journals that discuss natural immunity! What is it, are they ignoring it or are they publishing well cited papers on it?
Lastly, they conflate science with policy. As they even note, the scientific community has long known that there is some immunity with surviving infection. But policy has to take more than that into account.
Familiar with the term lie of omission?
But the simplest Google search and you can find Nature articles talking about T-cell response with respect to Covid:
https://www.nature.com/articles/s41586-020-2550-z
https://www.nature.com/articles/s41467-021-24377-1
https://www.nature.com/articles/s41577-020-00436-4
If you aren't aware of these discussions it's not because of lies of omission, gas lighting, or a vast conspiracy theory. It's because you buried your own head and then said someone is holding your head down.
The entire basis of this is that T-cell immunity is ignored, and only sky high antibodies caused by the vaccine offer any protection for future infection.