No, a grind is doing the same task over and over again using the same strategy over and over again.
Ehm..... yeah... seems like splitting hairs there. There's really nothing saying you aren't using different strategies to level in a Japanese games or whatever either, I might swap out Cloud, or level the Knights of the Round Materia a bunch or... who knows. I would still call that grinding if the narrative or artistic elements are all redundant.
Seems you don't understand Skyrim or it simply isn't the game for you. Skyrim is actually widely known and praised for the "lots of filler". That "filler" content is always of high quality in the Elder Scrolls games and in many cases even better than the main quest (especially in Skyrim, Jesus Christ the main quest in that game is boring).
Skyrim is all about exploring and doing what YOU want to do. If you don't like killing dragons you don't have to, you can completely skip all dragon content in the game. if you don't like fighting bandits you don't have to, you can completely avoid combat in that game (and still gain experience and level-up!). Basically in Skyrim, everything is possible but nothing is required, you can do whatever you want whenever you want (even more so with mods!), meaning there is absolutely no grind in Skyrim.
A few things, 1) Morrowind was vastly superior, and also had a virtually non-existent main quest 2) whether the side content or main content is good doesn't make a difference to me at this point, it's functionally the same kind of experience, only the labels differ 3) I had my 60 hours of Skyrim or whatever, not saying it's bad really.
However, there is just no wow factor in 40% of Skyrim because it's most trees and rocks, they just aren't going to be exciting. Skyrim had just enough kind of linear questing as many Japanese games (Dark Brotherhood, Imperial vs. Whitecloaks, warrior guild, mage guild.) It's kind of an inefficient pleasure though IMO, if the budget is high enough you can make an everything game like Skyrim or in some ways what DA;I may be. Minus those linear portions, Skyrim starts to look basically like a really expensive roguelike, and I'm pretty sure that would not have sold 20 million copies.