Lacks any credibility or logic.
The WSPR database holds no information that could indicate anything like that. WSPR doesn't report aircraft reflections, only the frequency & strength of the WSPR carrier between transmitters and receivers. Whilst their may be some minimal 'reflection' of signals at V/UHF frequencies, there is nothing on HF.
Reads just like another conspiracy theory dressed up with a whiff of technology. Great work GT, as always