Honestly, I was kind of upset by this when they announced it, but I'm totally fine with it now.
I get that there are developers that are raising hell about this, and they should. I work in Sales for a Software Development company, and we operate exclusively on Macs building iOS/Android/Responsive Web Apps, and the questions we're getting about writing React Native apps along with Docker and VM/Windows usage is warranted.
But for me? I don't really care so much. I use all standard Apple apps, save for Chrome. Mail, Messages, Music, Calendar, all of it are the Apple apps, and I assume they'll work fine. Even when I do music production, it's on Logic Pro X, which they've already ported.
So for me? I don't care, but I understand there is a small contingent that have serious vocal questions, and if not answered correctly, maybe push people into other platforms.
I for one am excited about being able to run some iOS apps on my Mac, and have a higher level of synergy between my devices.