I guess I'm confused, but how exactly can the SNW hills be considered a sightline issue? To me, a sightline issue would be, for instance, seeing external buildings from Wizarding World or Super Silly Fun Land while on Jurassic Park. Those are valid concerns, but not really comparable to the SNW hills; there should be a distinction made.
That difference, I'd argue, is that the hills are not a sightline problem, but a design/aesthetic problem. They're not something outside the land visible from within, but a part of it, and therefore, yes, the weird grid pattern is something people should be allowed to find ugly, as it's directly designed as a piece of the land itself. It's no different than if the snow on the rooftops of Hogsmeade was purple or if Mount Beanpole was a coil instead of straight, creative decisions directly tethered to the internal appearance of the land. Couple the fact that they're not like that in Japan's version, which raises questions why Hollywood is getting the ugly grid pattern, and I think it makes complete sense why people don't like it (and should be free to say so).