I'm not sure if Plaid still is- but when they first came out they were pretty evil. They would go into your accounts and download all activity. I spent many hours e-mailing them, trying to get a clear answer of what data they collect- and they never said no to anything.

Whenever I've been forced to use Plaid, I use a throw away "free-checking" bank account that has $1 in it.

I guess birds of a feather flock together.