I'm absolutely concerned with detail lol.
I just see that meticulosity has its place towards the latter part of a piece's creation, just as it does with every piece. With your definition, using a brush larger than 1x1 for pixel art would deem it beyond the bounds of what can be labeled as pixel art.

This is exactly what I have a problem with! The use of larger brushes on a mouse is just clunky.
I'm simply looking for a way to use larger brushes for a more dexterous way to begin larger pieces, and tablets offer that.
I see it as having more command over how your piece is structured from the get go, as opposed to the limiting nature of the way you can move a mouse.