Everything is better than doing nothing. And you do nothing

It's because it isn't really something that is supposed to be very impactful on an individual basis.

The trend to push for people trying to eat less meat instead of no meat is because the majority of the population is unwilling currently to give up meat entirely, and are deciding on no changes to their diet when petitioned to try being vegetarian or vegan. But, if you can get most people to eat just less meat, there is a collective impact to the meat industry, and as a bonus, someone who has already agreed to reduce the meat in their diet is easier to convince to cut more meat than someone who has never agreed to change their diet at all.

I half-agree, as it's not only about not eating meat that day. It also makes people realize that there's actually good dishes you can do that taste good without a big, fat piece of meat. That might be obvious to you, but many people still don't accept that fact. Having a meatless day offers an opportunity to showcase vegetarian lifestyle to non-vegetarians. And once people realize that "hey, that's not as bad as I've thought!", they're gonna make vegetable stir-fry next Saturday too.

Aren't you out here patting yourself on the back for not doing that?

It’s the social mindset shift that’s important. Start doing things to change, no matter how small, and everything builds from there. Just do something.

I am patting myself on the back right now as a reward for readinf your comment, and you can't stop me.

I'm a god damn meat eater. Do I get a pat on the back for not eating meat 6/7 weekdays? No. I get vegans screeching at me.

Rather do meat Mondays, or just switch to chicken.