Someone replied to another comment i made on here so I found myself looking at the other comments. call it "necro posting" but people continue to post about steam on itch like this, and Noita is releasing proper real soon, so theres a lot of people looking at these comments now comparatively. Less than a year is a very short time in the grand scheme of htings.
Bottom line is, people should stop expecting that games you purchase on itch come with steam keys. This is a different store. Just like it would be ridiculous to comment on a PS4 release and say "just so you know, it doesn't come with a copy of the xbox version. If you want the xbox version go to the xbox store here: [link to game on xbox store]" It doesn't make sense to expect this. It is also not even close to universally true that multiplayer games on steam don't share servers with DRM free releases etc.