Would yall use a windows phone again if windows 11 mobile ever existed

Unless it is all kinds of apps the same as Android or iOS.

Yes, if installable without an EFI. Currently, I utilise postmarketOS.

I probably wouldn't. I had the Nokia Lumia phone and sold it within 2 months. 

Many users appreciated Windows Phone for its smooth interface, integration with Microsoft services, and unique live tile design. If Windows 11 Mobile or an equivalent successor were to be released with modern features, good app support, and improved hardware compatibility, it's possible that some enthusiasts or those deeply integrated into the Microsoft ecosystem might consider using it again.

A major concern would be whether Windows 11 Mobile had a robust app ecosystem comparable to iOS or Android. Without popular apps and good developer support, even the most polished OS would struggle to attract users.