Yeah I don't believe the fact that adding easily copied/reproduced data does anything to an NFT, its use case still remains speculative data. If it wasn't why aren't people taking to doing the same thing on Liquid? Because its not about the NFT its about slapping it on bitcoin to virtue signal or show up those that focus on the monetary aspects of bitcoin,
As for storing other files, there are so many ways to store files, copy and recopy files, so I don't get that one either, you can always find another source for a file, and I mean what files are you really going to stuff in witness data that we all cannot live without?
I have no issue with full blocks, be it now or years later, it will happen, if people want to waste their time and money on this by all means, but as for me, I just see a bunch of data added to the chain that will be forgotten in years to come
Great for miners they're finding a way to encourage people to pay them to secure transactions they otherwise wouldn't but other than that, the "uses" I don't find really compelling but to each their own