Because printing in Linux both works and is supported and not supported and hope that there are drivers and they work.
For example, I have a brother printer and in both arch and Ubuntu/mint the printer worked out of the box. But I was missing features like double sided printing. So I had to download drivers for it.
In arch the drivers were on the AUR, so I was printing is seconds.
In Ubuntu/mint they weren’t in my package manager, so I had to go to brother’s website and hope they had drivers. Brother did and while it took a bit it did work too. No worse than windows.