Keep in mind while reading this that I'm the God Damn Brofessor here...
If you eat carbs at night you will get fat.
Egg yokes are bad for you.
You have to eat 5-6 times a day or you'll loose a f**k-ton of muscle.
You cant mix protein sources (like milk and whey powder) because you wont absorb much of it
Certain excersises will give certain muscles a particular shape. IE: such and such will Peak your Bi's, or this will give you horse shoe tris. Bah!
Use high reps for cutting
High reps give you big muscles
Low reps give you strong muscles
"If it fits your macros"
Fat is bad
Tribbulus Terrestis and about 8 million other useless supps
^^^ Just some examples of the bullshit that goes around the gyms and forums.
There are tried and true practices in bodybuilding, and some of the things we do are done just because its practical. The expression "you have to eat big to get big" is not what is getting attacked by the anti-broscience crowd. Its the made up bullshit that sounds like it has some basis in actual science.
I think what I'm saying is, although you've provided a definition, the example contained in there is a terrible one. Eating protein to gain muscle isn't broscience. And the know-it-all is quite simply ignorant of the level of stress we put ourselves under with our training. Everyone at work, and even my own mother constantly tells me I workout too much and that my diet is unhealthy. None of them have any idea what its like to strap two or three times your bodyweight on your back and squat repeatedly...