I think you're confusing banding with reverse banding...the latter of which has become so common, it's almost as if people have forgotten (or never knew) you can use bands to make a given bar weight MORE challenging, lol.
In the Efferding video you posted, he's 100% talking about leg pressing
against bands. You'll modify the resistance profile in a similar way with a reverse band setup, which may alleviate some painful sensation from the bottom of the movement. But you won't be getting the more restorative, elastic feel from pressing against band tension, nor will you get the nice "locked-into-place" feeling.
I guess reverse-banding still has its place, and there are certainly a handful of great bodybuilders with ridiculous quads who heavily RB their hacks (Brett Wilkin comes to mind). But my lower quads have never progressed as fast as when I stopped using that setup and just stuck to straight weight with an occasional foray into hack squatting against bands.
Leg press...I press against bands all the time, but the only time I've found a reverse setup was warranted was using the absurdly heavy, absurdly STEEP leg press at the EliteFTS compound. The thing had like 3 bands per side already set up in reverse, and after I peeled a couple off I realized it wasn't just ego lifters that put them on their in the first place