We aren't exactly short on FPS games on Linux now

Quoting: Segata Sanshiro

Steam should just remove Early Access from their network. it's not a good idea.

I have to completely disagree with this. While DF and others clearly abused the system, Early Access is a great initiative as a whole if you take into consideration some of the games it made possible:

Kerbal Space Program
Wasteland 2
Rust
Planitary Annihilation
Starbound
Prison Architect
etc.

In fact, if you look at the vast majority of early access games, they are brilliant and made possible thanks to the life line that is alpha funding. It's just a shame that companies like DF have to ruin it for the rest of them and cast doubt on their otherwise fantastic projects.