"And when I input it into ProSeries with a 2/11/2021 date"

Which is later than the provision.

"I don't see where legislation changed the date past an incident period of January 26, 2021, so it seems that the Texas storms would have a 10% AGI limitation."

https://proconnect.intuit.com/community/proseries-tax-discussions/discussion/is-the-texas-disaster-f...

Read that topic to see what was reviewed and how the CAA did not change anything, as pointed out. If you know of a bill newer than CAA that makes a change, please post that info here.