Northern Mexico relies on Texas for its natural gas generation, but due to deregulation or corruption they have insufficient reserves and are going through similar blackout practices.
I expect that this event will change nothing long term, it is Mexico after all.
If anyone is interested is how things look from the Mexican side, in English:
https://mexiconewsdaily.com/news/natural-gas-shortage-trigge...
https://mexiconewsdaily.com/news/blackouts-extended-to-29-st...