BOTW is not the best Zelda game ever.. I'm a huge Zelda fan and I've played and finished every single console Zelda game (besides BOTW), but to say it's the best Zelda ever made is just not true.
OOT and ALTTP are my 2 favorite of the series if anyone is curious on my opinion
Preference is subjective. For years lots of people have said that ALTTP is the greatest Zelda game. Personally, it's not even in my top 5.
I think OOT had the greatest final battle, and my personal favorite iteration of Ganon, but it's not my favorite Zelda game either. If it had used a few more pieces of the classic Zelda score, it would've been a closer call.
Majora's Mask is one of my absolute favorite Zelda games. I dug it for its darkness and having a much deeper story than it appeared to be on the surface. Plus it used classic Zelda themes. My favorite was the Easter egg of the original underworld music in Zora's Domain. BTW, who else remembers that the original name for the Zora race wasn't actually Zora? It was Zola. LOL. But I digress.
I also loved the melancholy feeling of Twilight Princess. Embracing a story's darker side isn't something all that common in the Zelda universe, but I welcome it in comparison to lighter entries like Wind Waker.
Then you have the timeless original, The Legend of Zelda. Debatably my favorite overall game of all time. Not only because of the game, but also the time period within which it fell in my life. Where magic still existed, and instead of novel length limited edition hardcover strategy guides and social media, we just had the elementary school playground to trade our game tips. And in doing so, build a fellowship. As I've said in previous posts, BOTW is the only game in the 30 years since The Legend of Zelda that truly once again awakened feelings from this period of my life.
It's too soon for me to say if BOTW is my favorite Zelda game. I have to play more of it. But it's definitely in my top 2 or 3 already. And IMO it's crazy for people to say it's not among both 1) the greatest Zelda games AND 2) the greatest overall games of all time.