This is the story of Windows since 7 (and even earlier if you used the crappified Windows typically included with hardware): "The default experience is dogshit, but with enough work you can fix it." With every release the work required to make Windows bearable increases.
Microsoft to push pwa outlook as the default client also is terrible. Why would I want a e-amil client that occupies 3 times the memory of the default outlook client?
