I know HN will rip this to shreds because it's Gates and this is HN but I look forward to reading his annual letter each year. It's nice to read a optimistic take on the worlds direction once in a while, among the daily pessimistic domerism.
I agree with you, but it might not be completely irrational to buy an about to be bankrupt company. If the assets on book is sufficiently larger than the stock price, investors might get a payout when it gets sold off after fees. When Enron was liquidated, the last investors that bought the stock ended with an 8x RoI (according to an Acquired episode). Still an insane gamble obviously.
A friend of mine just delivered a MAUI project and his opinion is that it is not production ready. He said that fundamental things like correct back button behavior is broken. I don't know any more specifics, but do serious critical research before choosing MAUI.