Right, the author quotes various people speculating recovered materials have non-human origin, and technically isn’t speculating himself.

It wouldn’t be the first time people cry wolf aliens and claim there is proof, then fall short when times come to make the data public.

It’s an extraordinary claim, with lots of talk, but little evidence shown. I assume claims and evidence (or lack thereof) will be investigated since there’s a whistleblower complain. But I’m not holding my breath.