I understand, but my problem is with influencers pushing only (animal) protein without considering other dietary factors important to health.

For protein sources, a quick look online says seitan, quinoa and nuts (for vegans) and eggwhites, cottage cheese (for vegetarians) are your most efficient options looking at protein per 100 grams. If you prefer lower calorie foods, beans, green veggies and mushrooms are also good options (high protein percentage but you have to eat a lot). For a high protein diet, especially for veggie/vegans it’s generally better to replace every meal with one slightly higher in protein than to try to add one foodstuff to your diet to achieve it all. For example quinoa or whole wheat options for your rice/pasta. Adding lentils to your tomato sauce and yogurt with nuts/seeds instead of cornflakes will get most people a very long way.

Are you aware livestock eats farmed crops too? Taking out the middle man (or cow) makes the whole thing more efficient at least.

Noone is saying get all your protein from beans. Maybe 25 grams from beans is doable, then have some yogurt, some whole wheat pasta/bread stuff, a few eggs. Variety in your diet and whole foods are more important than hitting specific macros as you get a good range of micronutrients, fibre and your gut microbiome is happier.

One the one hand I agree that weight control in pets should be easier as owners control most if the food. But I understand these are cats with a disease, so it might be different. Also, very food-obsessed pets might have challenging behavioral issues and even the best owner cannot always prevent some food theft or eating of inedible material by a pet with issues.

As a cyclist, I kind of agree. Apparently the introduction of seat belts caused an increase in cyclist deaths because people started driving less carefully.

I think eating something with dislike and fear of finding a piece of meat in your bite might get you to chew more reluctantly and choke more easily. I remember that feeling of almost choking on my food when my parents forced me to eat stuff I didn’t want.