No, because the USD market price is psychological, just like the stock market [1].
And no, BTC is not the reserve currency; Ethereum is. Nearly all of these "crypto tokens" are just ERC-20 contracts that run as contracts on the Ethereum network. They're not even cryptocurrencies, just contracts with sets of rules that mimic the properties of a currency.
After all, BTC is the reserve currency of all these crypto scams, as you call them.