[DiapDealer]

For heaven's sake, can't people read?! It wasn't an idealistic reason at all. More and more time was being spent trouble-shooting problems with the newer versions of Qt calibre is using and Windows 7 (not to mention that Python3.8 could be the last version that supports Windows 7) At some point, you need to cut your losses and move on. That's what happened here. Otherwise you spend all of your time troubleshooting, patching, and working around issues that affect users of aging OSes instead of spending the time developing new features for your application. The older versions of calibre will still work fine for the millions users who still use Windows 7. They've not been left in the lurch at all. The notion that this decision was anything but pure pragmatism is just not based at all in fact.