Same. I've had elderly family members unintentionally upgrade despite walking them through declining when they would call confused about the upgrade prompt coming out of nowhere. You could even shut down the "wrong" way and somehow end up upgraded.
I'm not surprised, the W11 upgrade nag screens are riddled with dark patterns.
Don't think it works for Win10 Home, but with Pro use gpedit and go to Local Computer Policy --> Computer Configuration --> Administrative Templates --> Windows Components --> Windows Update for Business, find "Select the target feature update" and set it to 'Windows 10', and '22H2'
Free Software operating system and move that ticket to OBE
OBE?
Overcome by events. A common end state for issue ticketing systems for when an issue was not directly solved, but is no longer an issue :-)