You can get USD for BTC right now, you've been able to get if for nearly a decade and there have never been as many reputable exchanges as there are now.
You said they "tend go down for maintenance" on "any big price swings" but were only able to muster one example of one exchange going down "for maintenance" on one price swing (Bitfinex).
The others, as the articles point out, were trade volume related (which is also a problem, but much less sinister).
There's no evidence this is some kind of grand conspiracy like you implied. There's plenty to criticise in Crypto, but little evidence for what you actually claimed.
there is no end. crypto will continue to swallow up all the world's capital and you'll be furious at how many leading zeros there are in your BTC-priced paycheck.