"I personally hate the Mac way to have no application frames..."
that is your opinion
if you spend your whole day in just one app - it is a 100% legitimate one.
on the other hand - if you use 2-3-4 apps in parallel, dragging and dropping objets from one to another, taking files from folders and dropping them on the artboard....
whatever you think is not important. window mode has been an industry standard for 30 years. same as cmd+C/cmd+V/cmd+X... space for hand, cmd+space for zoom, option [alt] button for modifiers....
if window mode was not an option in v1, i would not have bought it, switched my workflow from adobe to affinity etc...
now, updated to v2, strips me off a basic app functionality.
how to use dual screen setup without separated mode?
whatever....