For me as a developer by far the biggest concern is definitely technical alignment with production infrastructure. It has been such a boon in the last few years to be able to fire up docker and run to such a large extent the exact stack that ships to production. It's very unclear to me how close an alignment it will now be possible to have on future MacBook Pro's in this way. Between that and lack of nVidia support, it's definitely going to give me a significant push towards a non-Apple laptop for my next purchase.