I think you might be underselling how important things like the steam workshop and steam’s multiplayer support are.

Games like Starbound or Don’t Starve benefit a lot from the workshop.

While insert any party game gains a lot out of steam’s multiplayer support and friend list.

Also, while I don’t use Linux myself, Steam is one of the main reasons why Linux Gaming is a thing.

Considerate literally comes from considering (aka thinking of other people when making decisions), if you forget to take other people into account when making decisions, you’re being inconsiderate.

It’s not complicated.