You have to watch the language very carefully with these "fact-checkers." When they say "not effective for covid patients," you can't just take that at face value. They're being very specific about what "covid patient" means to them. If they say it doesn't help "those suffering from the disease," they again mean something very specific by that. It's a nested game of covering their asses. The casual reader is going to assume good faith, and that their meaning is simple and is what it looks like. But no, they're always lawyering these things so that there's some wiggle room for technical correctness, even if what they're saying colloquially is not reasonably true.