I don't think Bitcoin is a fraud, after all 1BTC=1BTC. However, its price in USD is largely fictitious. 95% of all Bitcoin trading volume is fake according to Bitwise. [1]
Trading BTC is almost exclusively conducted not against USD but against USDT, on the order of 80%. [2]
Tether is by their own admission (or I should say pie chart) 3% backed by USD. [3] That 65% "commercial paper" would make them the second largest global holder of commercial paper after JP Morgan, but nobody on Wall Street has heard of them. By their own terms of service, they never have to redeem a single one for USD, on any timeline - not for you, not for anyone else - and even if they chose to out of good will, they could redeem it for any "backing" they so choose. [4]
Tether is, by and large, a fraudulent enterprise. [5]
So, my conviction is based on the idea that if $60B worth of dollars (not market cap, dollars) and 80% of trading volume against BTC is these chuck-e-cheese tokens - and they were to suddenly disintegrate, that yes, the market price would utterly collapse.
There are no good players in this space. Even Coinbase, widely regarded as the "best" of the exchanges, had to settle with the CFTC because at one point they allowed 99% of the entire Litecoin trading pair (globally) to exist as wash trading between two bots at Coinbase HQ. [6] That's the best of the best.
tl;dr: The market is overwhelmingly manipulated, wash traded, spoofed, and trading is conducted in a currency that's backed by chewing gum and baling twine.
[1] https://cointelegraph.com/news/bitwise-calls-out-to-sec-95-o...
[2] https://coinlib.io/coin/BTC/Bitcoin
[3] https://davidgerard.co.uk/blockchain/2021/05/13/tether-publi...
[4] https://tether.to/legal/ section (3)
[5] https://ag.ny.gov/sites/default/files/2021.02.17_-_settlemen...
[6] https://www.cftc.gov/PressRoom/PressReleases/8369-21