It is absolutely the fault of the game when part of it is not that good.
it’s not that there’s too much content to complete, it’s that some of the content feels like padding the game out for the sake of boasting about the number of activities.
The topic deals with people complaining that there is too much content.
It's not padding because the game wasn't designed so you must complete every Shrine, get every Korok seed, and collect every little item in the game. The game was designed to be vast and astonishing open world, the content balanced across it so players could travel with freedom around the world with many different viable paths with the required resources and content. Shrinking the scope of the game would lessen what makes the game great. It would be dumb to limit the game's potential to cater toward the fact that there are going to be some completionists; and among them a subsection of whiny, lazy completionists.
If you're going to be a whiny lazy completionist, Breath of the Wild isn't the game for you. It'll be too big.
I understand what you're saying but there's no reason some of that content couldn't be something else if they really wanted there to be 120 shrines. I didn't complete the game BotW 100%, but I was sick of Test of Strength shrines with little to no variation. Judging by what I've seen on the internet, so was everybody else. I get that you think you're not supposed find all of them (which I find weird in a game that's about exploring the open world looking for shrines, but whatever), but imagine a scenario where you play about 60 shrines before being done with the game and about 15 of them are tests of strength, that makes the game look pretty bad. Sure, you may call it bad luck, but if the game was designed in with less shrines like those, the chances of that happening would be lower. Good game design needs to take these things into account.
Btw, just to be clear, BotW was my GotY for 2017, so don't mistake me criticizing the game as me hating on it. It's probably my favorite Zelda, but I think it has clear room for improvement.
Also, I don't get how being a completionist is being lazy, or whiny for that matter, it's just a different playstyle.