I don't find open-world to be bad per se, after all first Zelda was open world, I've been playing and liking open world games for some 30+ years...and anyone who knows me around here has a fair impression of what I think of Aonuma and his approach to Zelda. Yet I found this specific implementation of open world just plain bad and pointless, so much that I got bored of it after 10 or so hours and had to muscle through the game (only interesting area for me was Gerudo town).
This is indeed, unfortunatelly, mass market Zelda that follows lot of bad trends that became popular over the last decade or so. But I'm fairly old and I have seen lot of IPs that I liked a lot go down that road - in the end, you just learn to let it go and find something else...with a little bit of hope burried somewhere deep that sometime in the future maybe things will change for the better for IP you liked so much.
Well, BotW was basically my introduction to open-world games, so other games may do it better. In any case it really tainted my view on those types of games.
@bold, the biggest issue I have in Zelda's case is that 3D Zelda was pretty much its own thing, there really aren't other franchises out there with that exact same gameplay style. There's a bunch of one-offs like Okami, Sphinx and from what I hear Darksiders (Kind of), but that's it. Beyond Good and Evil was the closest I ever got to the same "feel" as Zelda, but the sequel is going in the complete opposite direction of the original game too, so there's nowhere to go. It's the same for fans of old-school Tomb Raider from what I've seen/read around the internet.