I think there is a big difference between a product being used for something in the 90's, and it being "good" by today's modeler / capture standards.... or even a tube amp rig live. Recording vs. Live is another distinction.
Oh man, at the risk of digging a super deep rabbit hole, it all depends on your definition of "good." If good means "Hey, it's perfect for boomer bends in my circa-'00 dad rock garage band full of Dumble sycophant amp builders," yeah, POD probably wouldn't have passed muster.
If good means "this sounds cool as hell I'm gonna record an genre-defying record that sells millions of copies," then yeah, along with a lot of other gear from that time period, it did, repeatedly.
But I get ya'. To this day, if I see a Reddit image with B£#®!n&£® gear in it, I downvote it.
So in the absence of the NULL test, are we again left with our ears? God forbid

.
We're always left with our ears.
This is the age of misinformation. Authentication is no longer a prerequisite. People will believe anything if the same misinformation is populated everywhere. IMO Leo's video will hurt Stadium sales and the only viable recourse is to add NAM. It ends all comparison bullshit.
I'm not suggesting we will or will not eventually support NAM profiles, but I can with 100% confidence say that if we do, giving up the fight against misinformation won't have anything to do with it.
Stated another way: "I have no clue how any of this works, but one guy on some YouTube channel is saying
this, which freaks me out because I'm allergic to context, nuance, or actual reading, so Line 6 better change all their Stadium development plans to assuage my willful ignorance!"
To use a car analogy since people love them, its like he is parking cars in his garage and then based on how they fit, giving them a single score thats supposed to tell you how well they will perform going to by groceries, hauling 4 kids to soccer, hauling tools and lumber, and going around a race track.
Oooooh, I like this one a lot. Mind if I steal it?