Well, this is what I figured going into it: Instead of obsessing over protein intake, why don't I just focus on eating a plant-based diet and then see if any muscle loss occurs as a result? Surely, if I'm not getting enough protein, then I will notice things like muscle atrophy, reduced strength, etc.
The short and sweet of it is that I haven't noticed any loss of muscle or strength at all. Go figure. It's quite liberating to jump off the animal protein train and just eat more whole foods.
The other day I made a peanut and chickpea stew from a vegetarian cookbook that will make you never want to go back to eating meat again. It was that good.