In any case I googled the keywords, it's called WSPR, and also found a critique:
https://www.rtl-sdr.com/nils-critiques-the-mh370-wspr-aircra...
And the full critique has suffered from linkrot, but Wayback Machine has it: https://web.archive.org/web/20220221112332/https://dk8ok.org...
(Sad how a URL that was live in 2021 is already dead in 2024...)
When asked to prove the above and publish a peer reviewed paper, they were unable to do so.
The reader is thus invited to draw their own conclusion.
Or perhaps they genuinely have some cool technology, and it could be sold into aero, military industries and they want to monetize it.
In that case the right thing to do would be to hand over their projected track data, which it sounds like they did.
They haven't published a patent either.
Again, the reader is invited to draw their own conclusion.