Sounds like they are all the same kind of "puzzles" in the form of a maze. The review states it's just getting through one maze after another.
The Witness review. Ana
Well that pretty much says it all.
"Point-and-click games generally have some version of pixel hunting," he says. "You look at everything you come across and wonder, is this thing interactive or what? In Myst, you come up to some elaborate, beautiful machine, and you start clicking on different parts of it, and eventually you find the knob that you're allowed to turn, and then you don't know what it does. Back at the time when that game came out, that was a totally acceptable thing to do. It was decades ago in game design. But these days, I don't think that's a very good idea."The Witness attempts to solve this problem with a sort of unifying theme to all of its puzzles.
Virtually every puzzle in the game takes place on one of hundreds of "panels" that are littered throughout the island. These panels often feature a grid of lines, and your goal is to draw a line on them from a specific starting point to a specific ending point.
In other words, all puzzles are the same type of puzzle, unlike adventure games that feature different puzzles. You don't get to investigate machinery and figure out how it works the way you do in Myst, Riven, RHEM, etc. Instead you wander around a cartoony 3D environment and find these "panels" with this puzzle on them. If you don't enjoy this particular puzzle game that he invented, you're out of luck.
You can watch a gameplay video here
https://www.youtube.com/watch?v=RZbRBen7rCcand see what the puzzles are like around 8:40 into the video.
The puzzle itself looks kind of simple, though I'm sure it would be more challenging if they have it in 100x100 size with the dots scattered all around instead of in a group.