Yes, but if you had for example 1 ETH in FTX when it went down, you're not getting 1 ETH back now, you're only getting the dollar value of that ETH in November 22, which was much lower than current prices (> 50%).
Bitmex is very much a niche exchange, it only offers a handful of perps. FTX will let you trade pretty much any thing you can think of (crypto perps/spot, stocks, political elections, etc.)
Are you sure there doesn't exist such a bug in the US Treasury? They would never in a million years let the public know if an exploit occurred, there's zero transparency
I hope you don't ever set foot in any other car either, considering they kill a million people every year. But a million is just a big number, it's not as powerful as 1 obituary.
I wouldn't worry at all about not being able to maintain it. Worst case scenario: they get acquired and VW/Apple/etc will service your car. The brand is too valuable to die at this point.