It's not really worth investigation. All the current headlines around this event boil down to a single source report from a litigous activist organization that only claims "anonymous sources".

No corroborating IG investigations or official reporting or even FOIA suits/events, which a serious external investigation would use.

That doesn't make it impossible, just heavily unlikely. Furthermore, it has all the hallmarks of an unsourced smear campaign then used as a convenient 'source' for sensationalist reporting. If the average HN reader were to inspect that source, I exepct they would see the lack of investigative rigour and wonder how the word "source" could even come into consideration here.