You pulled that out of your ass. Protein is naturally found in all edible plants. Some, like soy, just happen to contain higher amounts then say potatoes, which contain 2g of protein.
Edit: Also, how much protein do you think you loving need? For someone with a body weight of 150 pounds they would need about 50g of protein a day, and I believe even that to be a stretch 30g would be more like it. Further more, since your body has no way to store protein it just converts it into fat and stores it.
Yes, I totally pulled it out of my ass. Here, have some toilet paper to wipe some of my stuff off of it.
Do you understand that there are multiple proteins that the body needs? There are two types of proteins, essential and nonessential proteins. Essential proteins cannot be made naturally by the human body and are required in our diet in order to function properly. Plants, with the exception of soybeans/soy protein/soy itself, do not contain all incomplete proteins.
Soybeans are considered by many agencies to be a source of complete protein.[13] A complete protein is one that contains significant amounts of all the essential amino acids that must be provided to the human body because of the body's inability to synthesize them. For this reason, soy is a good source of protein, amongst many others, for vegetarians and vegans or for people who want to reduce the amount of meat they eat.
According to the US Food and Drug Administration:
Soy protein products can be good substitutes for animal products because, unlike some other beans, soy offers a 'complete' protein profile. ... Soy protein products can replace animal-based foods—which also have complete proteins but tend to contain more fat, especially saturated fat—without requiring major adjustments elsewhere in the diet.[13]
For future reference, double check your education and quit calling out people on "pulling facts out of their ass" unless you have the facts to back it up.