Earlier quoted context omitted.
Maybe, maybe not. It would depend on a variety of factors including the activities you do, your age, etc. Maybe athletes need more collagen compared to people who don’t exercise, etc, etc. Also complete protein sources are definitely not easy to get. Good luck if you have dietary constraints.
Quinoa is a complete protein, containing all amino acids that the body cannot produce on its own, and is gluten free.
Also, only animal sources contain hydroxyproline amino acid in significant amounts, which you pretty much only get from collagen sources.
So while quinoa and other like even whey might advertise themselves as complete protein sources, no, they do not contain all the amino acids humans can use in significant amounts.