Re: Is it "safe" for me to switch to Ubuntu?
X will not be removed from Ubuntu before 15.04. It might not be in the default install, but it will be in the repositories. I'm sure of it. Even if it is removed from the repos, someone will put it in a PPA or you can compile it yourself.
So, no need for panic.
I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.