Earlier quoted context omitted.
I’m personally a bit surprised that banks haven’t embraced U2F / WebAuthn as a way to disable Plaid.
On the contrary - Banks are falling over themselves to embrace Plaid, Finicity, Decisionlogic, Yodlee and all their ilk because failure to do so will result in the departure of their customers to a bank that supports all the new fintech apps that rely on these API providers.
Banks aren't exactly happy that their API is basically scraping their website, for very valid reasons, including the customer's own security.
If enough of the big banks decided they had enough of Plaid then it would present a massive existential threat to the business. If anything, I think that threat is a reason why they wanted an exit sooner rather than later.