Just different strokes. I'm at like 58 shrines done and don't feel super compelled to find many more having beaten the game and played over 60 hours. They get pretty repetitive after a while. I'm sure there's some great puzzle ones I've missed, and I'll keep exploring here and there (mostly to just use my Switch until more games are out), but I don't have any incentive of needing upgrades to hunt them all out nor enjoy them (or hunting for them) in and of themselves to make an effort to find all/most of them.
Just different strokes for different folks. BOTW is great for the gamers who like making their own story/fun, having tons of freedom, exploring for explorations sake, hunting for hidden things etc. Not as great for people who prefer more structured games and enjoyed past Zelda games for finding and completing the dungeons, killing Ganon and moving on to the next game.
As I've said repeatedly to avoid getting Jim Sterlinged, it's a testament to the games quality that I like it as much as I do given my preference for more linear, narrative driven games. It's an incredibly well made game. But just because it is, and is at 97 on Metacritic etc. doesn't invalidate that it's still not a game for everyone as no game ever will be. People that like it less aren't to be disbelieved, they just have different tastes than the people who love it. It's a very different game than the mainstream AAA stuff on other platforms that many gamers love. To some that's a huge breath of fresh air (no pun intended), whereas others will be underwhelmed or dislike it as they just love their linear, cinematic, narrative-driven games, or their online shooters or their sports sims or whatever. Others like me will fall in between and like it a lot, but would have preferred it to be a more traditional Zelda game as the openness wasn't a huge appealing factor for us and we really missed the dungeons and more linear narrative of past 3D Zeldas.