Alternative argument. Ignore everything I just said about nutrition. No greater reason to trust my opinion than the youtuber, if you don't know me.
I'll make an economics argument instead.
Bulk Pinto Beans. That's $0.75/lb.
Bulk Pasta. That's $0.775/lb
No matter how you mix it, you are paying at least $37.50 for 50# of that feed, with all its nutritional 0s.
Know what you can buy for less than $37.50 for a 50# bag?
This $18.00
This $22.50
This $26.50
This $28.00
This $26.00
This $33.00
Need more examples???
So yeah, rampant ignorance. Lousy Nutrition, Lousy Economics, Lousy use of your Time.