Using RT-PCR for diagnosis serves two purposes:
1. It makes viral research in population studies practical, as it would be impossible to conduct large scale studies doing a viral culture for every patient. The fact that there's a "better" test does not invalidate PCR. You offer hearsay annecdotes of the test failing in elon musk, but no studies showing widespread issues.

2. Culture is too slow to use for diagnosis. Patients would either recover, of not recover, by the time it was confirmed. They'd be spreading the virus the whole time too. If your only validated diagnostic tool is too slow for clinical use, it isn't much use, is it?

And the old classic "every source who disagrees with me is communist!" No, they're not. There is no arguing with someone who can arbitrarily decide that any evidence is fraudulent.

You have insulted people who take the vaccine as living in fear, but I guarantee that your fear of the great unseen Marxist boogey-man is greater than their fear of the virus.

So keep posting your conspiracy sites, and cherry-picked, out of context sentences, from marginally relevant studies. You've found your echo chamber.