Here are 3 Turbo Tax Help articles saying you can install 2019 on Windows 7. Amazon is behind the times and hasn't updated their website.
Windows System Requirements says you can install on Windows 7
https://ttlc.intuit.com/community/system-requirements/help/minimum-system-requirements-for-turbotax-...
Installing on Windows 7 Information
https://ttlc.intuit.com/community/tax-topics/help/windows-7-end-of-support-impact-for-turbotax/00/85...
And see
https://ttlc.intuit.com/community/tax-topics/help/what-if-i-don-t-want-to-upgrade-from-windows-7/00/...
