If unhappy - simply switch carriers. This "so called" protest will go nowhere. I'll be flying on Thursday's. It may be on UA, DL, WN, AA, etc. This will not work. Good luck.
I am happy with UA and DL's changes next year. That is me. I am sure this is going to effect many travelers. 95% will not even care. Kettles sure don't care or will not even notice the changes.
The only way to teach UA (or DL) a lesson is not to fly them.