My hot take take: Crypto still fills a valuable role, and will still "take over" the global financial system both at the individual and institutional level. Whether that's Bitcoin, another coin, or something new created by the institutions themselves is yet to be seen.
You're right that it's "tainted", of course. That's why I think we're in a (hopefully) long slump in adoption. I think that will rapidly change if and when the US Dollar loses its place as the world's reserve currency.
At some point there will be a war or significant political disruption. A large part of the world will want to divest itself of dollars, and none of the state-backed alternatives will be stable enough for their needs. That's when we'll see a shift to crypto - first some international institutions that do business across ideological borders, then the rest of the internationals, then individuals.
Unless and until that happens, things will continue to slowly grow. The boom/bust cycle will keep going, getting longer and lower magnitude over time. There's still money to be made in speculation, but that's not what interests me :)
Sorry how would crypto end up more stable than any candidates for a reserve currency? The only thing even remotely stable in the crypto world are stablecoins which... are pegged to the dollar (the actual reserve currency) which is already unstable in your scenario.