Alternative view - Open Source projects have the freedom to do what they want to do. Which in turn gives me the freedom to choose how I set up my desktop environment. How many changes have been pushed on Windows users over the last 15 years with the only option being to change and get security updates or stay on an old insecure version?

And while there are lots of desktop environments for Linux you can usually run applications targeting one in any of them (I use Gnome's file manager in Enlightenment as it supports accessing CIFS shares directly).