Even with that cap, I got hit in Nov when I got an XSX and PS5, loaded them both up, then the XSX died and I had to send it in, they sent me a new one, so I had to reload it all.
Thankfully, they have a one time get out of jail free card. Since that was my first time busting the cap (by almost 1T), I didn't get charged.
Edit: This is with Cox. I think they increased to 1.5T during the lockdowns.