It's the only reason I'm not playing it.

I'll wait for the next Zelda game on the next Nintendo system.

Right now you are complaining about gameplay aspects, not technical aspects. The comment that I originally responded to focused on your opinion of a lack of technical improvements from BotW to TotK. I'm saying there are technical improvements. Regardless of whether you wanted a bigger world or not, that's what TotK has. You cannot judge it's technical performance without considering the size and scope of the world in comparison to it's predecessor. 

That's not even considering the multitude of other technical aspects of the game, particularly the physics, which have been tweaked and expanded upon substantially. In BotW each item had it's own density, and moved based on it's form. In TotK each item still has that, and items can now be combined, so Nintendo had to account for how items might move when combined, what their density will be when combined, etc. Take shield surfing for example. You can easily surf on your shield, but if you combine your shield with, say, a rock you'll instantly fall off of the shield when trying to surf. But if you combine your shield with something that is flat and smooth, you can still shield surf and the surfing will be better or worse based on the traction you might have. That stuff isn't simple, and it takes a lot of playtesting to ensure that you aren't completely breaking the game in some way. 

If you don't like the gameplay, that's fine. But that's a separate discussion from whether TotK is more technically impressive than BotW on Switch. Which it absolutely is. 

I think what you are failing to factor in is the fact that this ISN'T just BotW on the Switch. The game is able to seamlessly transition between three (actually more like two and a half) huge worlds, not just the single world that is found on BotW. You can go from the sky all the way down to the depths without a single loading screen. They focused on increasing draw distance to help this transition feel more seamless. While they did create a more aggressive dynamic resolution and implement reconstruction techniques, what they've pulled off on the Switch is truly impressive. In addition to this, they've improved some aspects of the game (shadows, textures, albeit not to a significant extent) and they've even SHORTENED the load times. The game is 2.5 times larger than BotW and they managed to reduce load times...isn't that crazy?

When considering graphics it is important to think about the scope of the game. It's quite easy to suggest that linear game A is more graphically impressive than open world game B if you don't. 

I really don't care about the size of the world. None of the fans of the series actually asked for a bigger world. we mainly wanted more dungeons, better performance and  graphics, a Much more refined UI.