Also, I know of no researchers personally who are enthralled by the existing system.
If I am reading between the lines correctly, you are implying there are few undergrads publishing in high caliber journals because of gatekeeping. As a reviewer, I often don't even know the authors' names, let alone their degrees and affiliations. It is theoretically possible that editors would desk reject undergrads' papers, but: a) I personally don't think a PhD is required to do quality research, especially in CS, and I know I am not the only person thinking that; b) In some fields like psychology and, perhaps, physics many junior PhD students only have BS degrees, which doesn't stop them from publishing.
I think that single-authored research papers by people without a PhD are relatively uncommon because getting a PhD is a very popular way of leveling up to the required expertise threshold and getting research funding without one is very difficult. I don't suspect folks without a PhD are systematically discriminated against by editors and reviewers, but, of course, I can't guarantee that this universally true across all research communities.
I think the entire academic enterprise needs to be burnt down and rebuilt. It’s rotten to the core and the people who are providing the most value - the scholars - are simultaneously underpaid and beholden to a deranged publishing process that is a rat race that accomplishes little and hurts society. Not just in our checkbook but also in the wasted talent.
It also isn't any sort of conspiracy that government grants are given out to people with a proven history of doing good research, as evaluated by their peers.
Maybe not quite as prestigious as nature, but NLP is pretty huge and the conference I got into has average h index of I think 60+
The people you mention are probably making YouTube videos and writing blog posts about their findings and are reaching a broader audience..
"Neither Myers nor Briggs was formally educated in the discipline of psychology, and both were self-taught in the field of psychometric testing."
BTW I can tell you the the vast majority of researchers are not "enthralled" by the system, but highly critical. They simply don't have a choice but to work with it.