If I offered you a Styrofoam cracker and a multivitamin would you say it's nutritious and sufficiently good? Without added synthetic enzymes, aminos, vitamins, minerals and trace minerals a commercial feed is not nutritious, complete, or balanced. Striving for better bioavailable ingredients isn't the same as seeking perfection. Change is driven by consumers. The squeaky wheel gets the grease.Presumably, ag feeds must follow the same rules as human food and list ingredients by weight, highest to lowest.
Peas and other legumes are the plant-based proteins in chicken feed. So if peas are listed before the BSFL, presumably they are the greater source of protein. (And grains supply protein as well.)
It's good to see insect protein listed that high up, though!
I have to say, maybe leave this one element out of your search for the Holy Grail of chicken feed. It's so easy to buy a can of sardines or some marked-down ground beef and supplement commercial feed that has everything else.
The drive for perfection is the enemy of acquiring the sufficiently good; something like that.