It's opt-in by default, and so for the regular user of bitcoin who may not be up to snuff on all the technical stuff, that means it's on.
It is not "used by default" so you are trying to make something controversial that actually isn't (is this all that you guys can do?).
Most everyone will agree that RBF is "controversial" regardless of what side you are on. Just like the block size is "controversial."
I've been nothing but respectful to you the entire time. Since it's not being reciprocated, I won't bother you anymore by engaging you in future posts.