They've said that they got permission from Tim Worthington to manufacture their own nesrgb boards for this. Not to mention they also killed hundreds of original Famicom hardware to shove them in their ugly casing.
I'm not judging the intricacies of it, I've delved with reverse engineering and other people diagrams myself. I wouldn't care much if they were doing a rip off, as much as I commend the original inventors and give them merit for it. If it was a better product or cheaper I'd be there instead of the other side of the fence anyway.
The more products in the market making NES shine the better... Be it finally a NES clone/motherboard that actually improves over it or a gutted machine that's being upgraded rather than scrapped. I'd buy that Famicom/NES I've shown in a heardbeat and at a very hight price if it was professionally made with molded casing and good finish, it's just a great thing to have, I'm even tempted to pull my own based on the photos.
But this Analogue NT stuff are very questionable taste, because they don't even look like a NES. When I want a NES I want a NES, if I had unlimited money I'd purchase that and perhaps still use it (because I still lack a NES RGB console), but it's still no NES and it sure doesn't feel like having one.
It's as much of a NES as a Polystation for me... Carved aluminium and whatnot. Only difference is that it doesn't functionally suck.
But that means they wasted a very good opportunity.