Another reason the CoC changes have been received so negatively is the antagonistic and hostile behavior by Stack Exchange employees towards the community. I think it's important to point out Pëkka's comment before it gets blindly deleted:
73 It's reassuring to know the site's director of public Q&A has a nuanced, completely straw-man-free view on the debate. i.sstatic.net/VLqFB.jpg – Pëkka 6 hours ago
This is a tweet which was retweeted by our favorite Stack Overflow Director of Public Q&A, Sara Chipps♦:
Reading comments on a blog post about a CoC:
If you're against CoCs and to protest you're leaving the community because the CoC has become more inclusive...
You identified yourself as part of the problem
You removed your problematic self from the community
... thank you?
That's unprofessional and not very welcoming of an SE employee.