Yes, and that specific site lists their holdings of stock, etc. Well, declares them.
Compare and contrast this propaganda site with peer reviewed clinical journal publications on the PCR test. And demonstrate by doing this how your are NOT failing to discern.
I read information from a variety of sources. Example - Noam Chomsky was saying for the US to get out of Afghanistan for DECADES, even before it became fashionable on FR. I don't agree with almost anything that Chomsky writes, but in the case of Afghanistan - he was correct - and way before almost all FReepers, and it was worth reading him to find out why he thought leaving Afghanistan was the only correct option.
There's several articles regarding PCR testing, both peer reviewed and otherwise. But be aware that there are several on the anti-vac side that cast aside peer-reviewed articles, especially when it does not agree with their viewpoint.
"CDC Diagnostic Tests for COVID-19" - see https://www.cdc.gov/coronavirus/2019-ncov/lab/testing.html
"Accuracy of COVID-19 rapid antigenic tests compared to RT-PCR in a student population: The StudyCov study" - see https://pubmed.ncbi.nlm.nih.gov/34134035/
"Why COVID PCR tests aren’t as accurate as you think" - see https://www.kevinmd.com/blog/2021/01/why-covid-pcr-tests-arent-as-accurate-as-you-think.html