If you're too stuck up to appreciate a funny pun, don't use the software. No one's holding a gun to your head. Or you could relax, not everything needs to be "serious business".
Even when poking fun at myself, I choose names of projects carefully. It's pretty easy to not be a jerk, at least in this way.
How could you possibly know this, where do you draw the line?
For something people, "Hacker News" is surely offensive because "hacker" is generally thought of as a negative term (Yes, I know our meaning, others generally don't).
GitHub could also be offensive to some, "git" after all is as much of a swear-word as "fck".
Good luck explaining a less-techy client at your job that fck-nat, fsck (which was originally just "fuck", afaik) and so on are fine puns and no one's holding a gun to their head either. I feel similar about recursive acronyms. These are funny-ish when you're in your mom jokes phase, but then someone asks you what that means and sometimes you can see their "what a bunch of creeps" reaction when you try to explain. Not surprising that people try to avoid that "we can use FCK for our SHT instances in CRP network" nonsense.