Good point. You can, but you shouldn't. And I won't use it or encourage its use. In fact, I'll speak against it on every opportunity I have.

So you don't use any proprietary technology then? What kind of car do you drive?

Of course I do. But I avoid it whenever it's possible and active advocate for non-proprietary alternatives.

That's cool with me. I choose technology on quality alone, with regards to my use cases. I certainly don't tell people that they shouldn't use what they're using, I just give my opinions. People such as yourself are often telling me I shouldn't do this or that. I don't mind it, because I enjoy talking about technology and sharing my point of view. Some people just don't see it though.

I think that I understand why someone would wish to exclude all proprietary technology. No advocacy is the best advocacy though. If the product is so great, it sells itself. It does. People use 'nix all the time for the things it's good at and then they go use other stuff too. Hostility towards that "other stuff" really works against the cause IMO. Why not spend the same time an energy to make the product better? Then people will just use it and nobody will have to argue about it.