Nah, the meme says people who believe in meat eating (carnists) can be leftist on other issues, but they just can't bring themselves to be progressive about animals.

This is why i try as hard as i can to phrase things as "i really think you should consider not doing XYZ" or if it's really severe "So: you doing XYZ is objectively quite shitty, i hope you can accept that and be motivated to stop doing it because it makes you feel bad, but also i don't hate you for it it just makes me sad"

Like with veganism we should all eat as little meat as we can. Eating meat is bad in so many ways but obviously it can be quite difficult to stop, so i don't judge people for eating meat but i will judge people for ignoring that it is bad and refusing to even consider changing their habits, just try to eat less meat or at least switch to meats that are less bad.