Plaid does the opposite. It scrapes using your banks credentials.
I could've sworn several years ago it was perfectly possible to use your sign-in credentials, then immediately change them, because it basically needed an authorization token, but then worked fine.
Now it doesn't. I work for a company with a Plaid integration and if the bank so much as requires any kind of 2FA, you just can't use it at all anymore.
If Plaid is every compromised in a way that leads to a loss of your funds in your account (probably unlikely), your bank likely has no legal requirement to make you whole for that, if you shared your password with Plaid.
I just don’t think you should share your bank password with any external entity.