Re: Will the new app stop installing "Photos Media Engine Add-on" without your approval?
They never could "from scratch". Microsoft is known to do many things half-assed since its existence, and that has not changed much. The actual OS below the surface got quite stable in the course of 35+ years, but the UI components not. Explorer is still prone to crash, inconsistency in the usage and so on.
My biggest annoyance is the constant officiousness - part of the UI.