I'm not part of Mozilla or any of the communities and I understood the situation by reading the damn post, on the first time.

In the follow-up, any words concerning how the person feels, words on how to talk about this further, and wanting to truly understand what he just wrote in plain and simple terms simply reek strongly of "we really won't change anything, we've made our decision, we are disagree with you but we want you to agree with what we're already doing".

I can hear the exact same tone in exact similar situations with various customer service reps, HR, corporate smooth-talkers, public officials/politicians where the decision is already written in stone and they just pretend they're listening to the customers/employees/citizens affected to quiet down the criticism.