Recently it switched to running via Proton if you had Steam Play enabled (and broke completely for me). Solution is/was to disable Steam Play and it will use native version.
LinuxCNC (at least Axis) can be controlled by keyboard - F1 is especially handy to stop the job in progress if anything goes wrong. Arrow keys can be used for jogging, with shift it uses max travel speeds but dedicated CNC pendant for jogging is on my TODO list as well as standalone DRO with 7 segment displays.
Multi-planet battles while cool looking and fun are not balanced and most of the competitive matches are played with no orbital tech on single planet - these are quite similar to competitive matches in TotalA and really well balanced. If you play ladder or with people looking for competitive matches then it feels a lot more like old RTSes although you can still zoom out or send units in not so obvious ways (frontal attacks rarely work) which often makes for interesting surprises and strategies.
It takes a bit to get used to playing on planets instead of classic maps with borders but that’s what makes this game special.