I'll admit I didn't read this "paper" at all. 10k hours on PubMed, I'm beyond fed up with this stuff, so I'll go with your analysis, with the caveat that the so-called "covid-19 virus" has never been isolated and the "test" tests for something that isn't clearly identified, i.e. it could certainly be an exosome. Even one of "healthy cells under attack" type of signaling.