Advice: Just think of XT as a security valve. If the core deadlock continues, the miners will opt out

And leave Bitcoin in the hands of "benevolent" dictator Mike Hearn and his blacklists? Sure...

Bitcoin XT is the only viable implementation of BIP 101, that is the only reason miners and node hosts are switching, if you had been paying attention this debate it about avoiding dictatorships not supporting them.
Mile knows as well as you that fungibility (
no black green or red lists) is essential for bitcoin to succeed as money, he discussed an idea and yes I agree with you, that he even entertained the idea is a little disturbing.
if he is as clueless as you it will be much easier to not employ his changes than it is to improve bitcoin with BIP101.