The article you linked is littered with misinformation. I would not recommend that anyone read it.
It asserts "facts", like the false statement that wearing a mask lowers blood oxygen concentration by 20%, using citations of Facebook videos and conspiracy theory "news" websites as sources.
It asserts "facts", like the false statement that wearing a mask lowers blood oxygen concentration by 20%, using citations of Facebook videos and conspiracy theory "news" websites as sources.