That’s what matters when discussing his expertise on the subject of the COVID vaccine. It doesn’t matter how great he might have been at one of the many parts of the scientific process which got us here, what matters is the topic we’re actually discussing. Scientists are not like you see in the movies: nobody is an expert at everything and they’re not perfect, either — that’s why the process is built around adversarial review since everyone makes mistakes. Linus Pauling was a Nobel laureate and by all accounts a brilliant researcher but that didn’t mean he was right about vitamin megadoses.
This is such a weird question because the answer is obvious, he was working in a leading role as the head of a government agency who has to be involved with/aware of what is going on with the vaccine.
Malone is the discoverer of in-vitro and in-vivo RNA transfection [1] and architect of mRNA vaccine platform (check the 9 patents he holds) [2].
Please don't take what I'm saying here as an attack on you personally, but what makes you capable of saying that he's not an expert on "what other people subsequently did over the next 3 decades". And what sort of credentials you personally have to say that whatever medication he's endorsing "don’t work", or that "he’s no longer willing to meet the standards of being a scientist". What are those standards? Is it that he's not part of the consensus you're speaking of?
With that being said, I'm absolutely NOT saying that he is right and the others are wrong either. But to pretend that he's dangerous and others are not just because he doesn't bias in the direction you like is not a good reason really to dismiss it, or to want to brand whatever show he gets hosted on as "dangerous" for doing so. He has as much right to say his mind as others. He's no more dangerous than Anthony Fauci or any other expert involved.
1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC297778/pdf/pnas...
2] https://patents.justia.com/inventor/robert-w-malone