It hasn't. That's why I love it.
What it has done is help me organize windows better.
I used to spend a lot of time fiddling with the spacing and sizing of windows, dragging them between desktops, forgetting where I put windows and searching for them, dealing with overlap making sure a small amount of header bar was visible so I wouldn't lose windows behind other windows.... too much manual window management. I tried many times to always put windows into the same place so I would get used to and know where they were, but somehow that never worked out.
With niri, with just 2 monitors and 3 (or it might become 4) workspaces, along with the scrolling to the right, I have everything I need, no wasted space (tiled), easily findable and easily groupable.
