I know you were talking about a mountain or something, but "climb to <altitude>" does make one think about this exchange which would be in feet, not meters:
"climb to FL20 and the flying dinosaur thing will break" could work though
Since, annoyingly, international altitudes are done in increments of 1000 feet (ish, handwaving)
Guess he meant non-free OS. I still don't get the point though, cause someone who cares so much about FOSS wouldn't be criticizing SL vs Leopard, he'd just not use Mac OS.
To be pedantic “BSD” is the name of the original distribution that FreeBSD is based on, and the license is also named after it (rather than FreeBSD being named after the license).