Of all the criticisms of GE I've seen, this (oft-repeated one) is the one I find to be the most utterly stupid and flat-out wrong.
Whatever your opinions on the ST are, I think we can all agree that the ST leans heavily on the images and iconography of the OT, and often downright lifts massive chunks of its narrative. The "world" of the ST was contorted to resemble the OT, whether or not it made any logical sense.
So the ST is obviously massively indebted to the OT. And, since GE is "set" in the ST, it similar owes the same massive debt to the OT.
When people say there's nothing from the OT in Galaxy's Edge, it's laughable.
Perhaps you missed the centerpiece of the entire park, a massive full-scale Millennium Falcon? Or the ride that lets you hang out in the Falcon and actually fly in it?
Perhaps you missed the massive, full-scale X-Wing and A-Wings that are in the park? Yes, while all these were used in the ST, they were born in the OT and owe their existence to those films and are still associated with those films first and foremost.
The droid and lightsaber builds also harken back to the OT (and, in the case of lightsabers, actually feel more PT than anything else.) The land is full of droids and vehicles and trophies and countless bits of ephemera, scenery and props that all have an OT aesthetic.
The land features Chewbacca and R2 (although the latter is currently limited to the droid shop.) The land features stormtroopers. The ST stormies were designed to be as similar to the original stormtroopers as possible while also suggesting the passage of time and the refinement of the technology. Dok Ondar is an Ithorian - no Ithorians in the ST! Hondo ain't from the ST, either.
If you had never seen the ST at all, the only thing in Galaxy's Edge that would be slightly confusing would be the new nomenclature for the "Rebels" and "Empire" and the presence of Kylo Ren and Rey. That's it!
The entire park evokes the spirit, images and aesthetic of Star Wars going back to the original films.
Sure, I get that some people would have wanted to see Darth Vader.
But those who complain that it's not "Star Wars" are being willfully disingenuous and/or stupid.