I don't think it's silly at all to demand that users should have rights and that they should be able to control their computers. Valve makes proprietary software, which takes away user's freedom, so it is unethical. They could make money in an ethical way if they only wanted. SteamOS is proprietary software too.

I don't know much about VR, but if Valve makes a headset that doesn't require proprietary software, that will be great. It should then be used as an example that other companies could follow. But it can't be used as an excuse for them abusing users in other ways.

Also someone need to be paid to develop open source software. This being the beginning of the topic and all. I’m happy for that to be Valve at the moment as they have shown the industry how to be better.

Certainly, but Valve's business is mostly focused on proprietary software and DRM. When they do make Free Software, it seems to be for the purpose of attracting people to their proprietary platform.