I guess it is time to be blunt. You don’t know the basic definition of veganism. You don’t have a firm grasp on how life is classified (you are right mushrooms aren’t plants, but no one said they were). You don’t seem to fully understand proteins and metabolism. None of that is a problem. We are all learning all the time. You could gain that knowledge by taking a minute to do an internet search to see if you might not be completely right. These are things that I am very familiar with and I still did a quick check for changing definitions and new science before I responded.

edit: grammar