That is a HUGE disclaimer. "no information on that, though, whatsoever" - it doesn't get any bigger than that.
The reason he was able to write about this was that he had sources within NASA that would tell him the inside story behind the decisions, and how much politics influenced them. Now his sources are telling him that this decision was not political. I don't have any reason to trust his previous sources but not his current ones (especially when many are the same).
If you want to see this in action search for pretty much any article on SLS or Artemis by him. The one I offered with the former NASA administrator was to clarify to people who might want to claim he was just speculating or whatever. NASA is the posterboy for making bad decisions under political pressure, and not just in contemporary times...
And again something you can't discount here is that Eric himself has written extensively about NASA frequently carrying out/endorsing poor decisions (SLS/Artemis being the low hanging fruit there) owing much more to political pressure than pragmatic decisions about the best direction for progress. Here [1] is one example, including an interview with a former high level NASA insider (30 years experience, up to deputy administrator) openly and casually talking about such.
It's not a secret whatsoever that NASA is under constant and significant political pressure. It's just a part of the game. And in this case you had a situation where the guy, who had basically become public enemy #2 (from the previous administration's POV), was going to be spearheading a high visibility rescue of a launch that should never have been approved in the first place - undoubtedly while blasting it all to his tens of millions of followers. To imagine this would not have provoked some behind the scenes 'management' just seems unthinkable to me.
[1] - https://arstechnica.com/science/2022/08/former-nasa-official...