So, I'm totally ok with "Baconator". "Chlamydia" is kinda poor taste. Not OK with "Rape my X". So, yeah, tasteless.
Meh, people always get bent out of shape when a statement makes them think. You feel guilty because your mind associated it with something inappropriate.
"Rape my X" is likely in reference to the window manager. I don't see an ethical problem with metaphorically raping computer software, especially when KILLing is taken so lightly...
yes i'm sure the parent was upset because "rape my x" challenged his unexamined beliefs and not because it's juvenile edgelord shit