a) Yes, I agree that those main menu "Summary" amounts in blue, need to update to include the extra entry you made (or removed when deleted) for any 2021 state "quarterly" estimated tax payment made in the "Estimates" area.
b) I don't necessarily agree that there is any easy way to get it drilled into the taxpayer's heads, that the "Extension" payment is entirely different from what is termed an "Estimated" payment. TTX uses the Estimated term to refer to the (usually) regular Quarterly Estimates payments.
Perhaps in the "Estimates" area, TTX could prefix every menu item in there with "quarterly".
As an example: "2021 state quarterly estimated taxes paid in 2022". That might get people to stop a moment to think about that, an discern it is not for extension payments. Other than sticking in a header "Do Not Put any Extension Payments on This Page" (which they are unlikely to do...but who knows)
c) As to the extension payments in the "Other Income Taxes" section. Not sure whether anything else can be done there.....a payment with an extension is an extension payment, and that's where they go.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
