I think that it is a valid opinion to think that we should lift the lockdown - there is a huge cost to the shutdown, and flattening the curve was originally just to keep the hospitals below capacity, which they seem to be. However in the context of his other tweets, it seems irresponsible. He is retweeting conspiracy theories that hospitals are reporting cases of COVID for profit, and even made predictions they by the end of April we would have 0 cases (which has obviously not happened). He retweeted a YouTube video that was later removed for violating TOS, presumably because it was spreading false info about COVID (I disagree with that particular policy but it still indicates the video isn't something he should be retweeting).
He is not conclusively wrong to say that we should lift the lockdown. However the other things he is saying show that he is conclusively wrong about other aspects of the virus, and is spreading misinformation about it. Given how poor his predictions about it have been, his opinion is useless and dangerous given how many people listen and believe what he says.
I would love to know why you think it's a conspiracy theory that hospitals are reporting cases of COVID for profit. It's not like healthcare has never gamed the system. Not saying you are wrong, but it's a possibility that they indeed gamed the system. If he has made predictions that we will have 0 cases by end of April, that's just clearly brain-dead of him and it's fine if we are lamenting him for those stupid predictions.
Hospitals are actually suffering economically as a result of this entire crisis, too. They are postponing and cancelling more profitable elective procedures[1]. If anything, they're incentivized to underreport the # of cases.
[1] See the FT: "Counter-intuitively, healthcare was one of the sectors that provided the biggest drag on the economy, as hospitals stopped performing lucrative elective procedures in order to focus on dealing with coronavirus patients." https://www.ft.com/content/06493320-083a-4a7d-94cc-8db581f9e...
And to expand on the reporting of COVID for profit, I think it is possible for hospitals to be over reporting COVID cases, but I think it borders on conspiracy theory to suggest that it is a significant contributor to the numbers we are seeing now. Deaths don't lie and the increase in deaths we are seeing lines up with the positive test results. So in the context of arguing that we are overreacting to COVID, I think it is a poor argument.
He is not conclusively wrong to say that we should lift the lockdown. However the other things he is saying show that he is conclusively wrong about other aspects of the virus, and is spreading misinformation about it. Given how poor his predictions about it have been, his opinion is useless and dangerous given how many people listen and believe what he says.