You also can't just demand people who have been using naming conventions for twenty plus years to write off that history just because Microsoft decided to use something different.

I'm pretty sure Ubuntu adoption rate isn't affected in the least regardless of whether you call it the Super key or Windows key, or Logo key, or any of the other names it's gotten over the years. "Normal people" don't ever use that key anyways.

1. You can if they are in a very small minority.

2. It's not about adoption. It's about usability. Everyone will know what you mean if you call it 'the Windows key'. The same is not true if you call it 'the Super key'.