You can see with the Steam Deck. Valve is slowly releasing drivers over time but in early stages Windows was inefficient, sound didn't work or didn't work well, sleep wasn't snappy, the list goes on.

It had all the problems your average Linux install will encounter without the enthusiast-written drivers to work around manufacturers' lack of support.

That said, the Steam Deck seems to be the first non-enthusiast device where the manufacturer actually cares. Even laptops that get sold with Ubuntu preinstalled from the factory don't seem to receive that much support over the years.