Saw it the other day on twitter, and wondered why is it not part a of the ArtCraft :D Perhaps they didn't realize this ArcPro thing exists. Jokes aside, the rewrite may pave door for many people actually turning to this workflow, and to an actually working GIS software.
Most of the GIS people I know, and I really know some, are totally oblivious about the underlying magic of QGIS or ArcPRO, and many of them would happily go away from both for many reasons.
Mind U - ArcPRO is also an ecosystem, no only maps layer, is actually an ERP of sorts, when tied with the ArcServer and the rest in their design. But is quite heavy, super bloated (ArcPRO brings own Python, Postgres, Java, and perhaps the whole proj+geos libs also and whatnot).