I mean definitely different types of vegetarianism and also different motivations
like if you're opposed to the animal cruelty of factory farming then maybe your own free range eggs or hunted game could be acceptable
if you're opposed to the gross environmental impact than maybe sustainably farmed fish is a better protein alternative to nuts, or heavily processed and packaged meat alternatives might not be as worthwhile impact
Or if it's a health issue then a balanced diet including eggs maybe makes a lot of sense while avoiding red meat like steaks
I think for most it's a set of guidelines that you can adapt to fit your personal goals, why shouldn't it be?
Personally I eat a ton of eggs, chicken a maybe 2-3 times a week, and burgers or dogs a few times a month. fuck a steak, I don't get it, but I also recognize people really enjoy em. But I recognize all of the above, it's cruel to animals and I do feel some guilt over that, it's not a primary driver but I would prefer more humane non-farmed meats where given the option and would pay more for it. The environmental impact is a big one, I don't need meat every day, let alone every meal, and recognize it's not healthy either, so I choose to eat it on occasion, but not on the reg, and also prefer local stuff - not so much for the transport aspect as the packaging etc, and of course that goes to all food. I'd rather have a head of lettuce from out back (even though ours got too much sun and are bitter or have now bolted... oops) versus some chopped up prewashed and bagged store greens. so much unnecessary waste. makes me feel disgusting having to take out a whole bag of trash every week, and it's mostly just disposable containers for consumable items. shitty