Lol I know, but they were essentially making the point that beans are just an overall better protein source.

Now, don't get me wrong, beans are a great and nutritious food, and a good source of protein, but if you're analyzing them just as a protein source, then they're just objectively not as good as most meats, or like you pointed out, eggs.

I do agree that you should want to eat a healthy and balanced diet with a large variety, but at the end of the day macros do still matter, especially if you need to gain or maintain muscle mass. That can be because you're an athlete, or because you're over /under weight, or because you're elderly and need to prevent muscle mass loss to maintain the rest of your health, or if it's because your sick or recovering from an injury. In all those situations, where macros do actually matter, then it's perfectly possible to gain muscle while eating vegetarian or vegan, but just normal beans are not the protein source to do it. You're either going to want to eat quite a decent number of eggs on the reg, or supplement with a concentrate like whey or pea protein powder.

My point is just that beans are not an equivalent protein source to meat, and there's no point pretending like they are. No one is going to fall for it and suddenly convert. You'll have more success convincing people to go meat free by actually giving them viable alternatives, not gas lighting them.