I agree with most of that. Good info.
What you have to get away with is the "gurus" telling you that whey is all about the highest protein percentage. Protein percentage is NOT what makes the protein what it is. And it is not the same as "quality". Ion exchange, for instance, is always being touted as a good choice based on protein amount and it's probably the worst choice there is.
Hydrolyzed whey is a big source of bullshit from people who derive their choices from "info" by supplement vendors. Hydrolized whey may be absorbed a tiny bit faster because it is predigested. But there is no proof whatsoever that this is an advantage to US. Absorption rates in particular have become nothing more than a marketing tool. It's really out of hand. IMO, you don't have a very bad digestion problem or you are not laying up in a hospital on the critical list you're pretty dumb to pay all that extra money for it. When it comes to whey it's pretty much as fast as it needs to be, I'll bet.
A favorite trick is to tell you that a certain whey is better becasue it contains a gram more of one or two amino acids, lol. Glutamine is always high on that list. Or like a couple extra grams of bcaa perserving. Course you have to look at the "serving size" cuz a 34 gram serving is a little different than a 30 gram one
If you wanted more glutamine, not that it would mean much, go with soy. You'll get more glutamine and arginine. Yippy.