Earlier quoted context omitted.
> any changes require consensus from the miners who create Bitcoins and process transactions, and because it's not in their best incentive to do anything to reduce those transaction fees Can you explain how this jives with miners supporting Segwit2X, which brings both segwit and bigger blocks?
The opposing and (IMHO) ultimately greater pressure is that it's also in miners' best interest to keep Bitcoin alive and successful. It took a long time to hammer out SegWit2x and it's still not certain that it's going to work.
Segwit2X would activate effectively Bip148, though it was originally a proposal to use a different mechanism it is acceptable enough that Core is happy to have segwit activated that way.