The meat alternatives will only get better as time goes on and market demand grows. A burger or nugget is really not an impossible (lol) to recreate item; most of the meat texture is lost by the processing involved.
A burger is obviously ground and a nugget is usually chicken that’s ground to almost a paste then shaped and breaded. At that point it’s finding something that can approximate the texture of the mushed up meat goo and then finding something that can convincingly flavor it. That’s why impossible was so adamant to get leghemoglobin cleared by the fda, it really is by far the best option. If not that your other options are basically trying to recreate a “meaty flavor” with spice blends and msg which is how the older meat alternatives worked
The much bigger challenge is finding something that can texturally approximate intact muscle (eg wings or steak). As you’ve said there are decent soy wings and there are steak strip things and such but these are generally passable. They taste good and are fine as a meal but they aren’t the same in the way an impossible burger is reallllly close to a burger. Lots of people trying though! Jackfruit, tvp, seitan, pea and soy protein, etc. but none of them come close to the mouth feel and texture of a wing or steak. Someday, maybe. I hope someone figures it out; I haven’t had meat in like 20 years or so but I do miss the texture of steak from time to time and wish I had something that could recreate that