It's a bit of a statement for what you're trying to communicate with that lid - professional experience, political statements, personal "this is neat"...
And part of this is a for me the lid of the laptop is something that I'd need to be able to be comfortable with displaying in front of a CxO without worry about if they may be offended or not (though perl might be offensive to some).
So far no one has ever been offended by this though. HN is far more sensitive than the average CTO.
That can be a healthy attitude outside of work. People love personality.
But at work, that's not a healthy attitude. You're there to work together, not to be uncompromising in expressing yourself. Your stickers are probably fine, but I can also imagine plenty of musical artists that would certainly be offensive (and rightly so) to some people, whether for their lyrics or for their criminal behavior -- and then the attitude of "that's more your problem than mine" is not gonna fly.
My only point is that the "if someone is offended, that's their problem" attitude is not so black and white. People often use it to justify being an a**hole too. Obviously, gay or trans stickers are not in the category of offensive things. There are things that are appropriate to express, and things that are not. So yeah, sometimes you need to compromise on your self-expression at work because not all of it is appropriate for everyone, you know?
It's at least plausible to taxonomize them under either politics or sexuality. Either of which larger categories some might consider categorically offensive or inappropriate.
Yes, I'm also saying that "vote for $PARTY" (categorically; regardless of which party) and anime catgirls are both potentially offensive or inappropriate. Depending on how much of a stick-in-the-mud people in your local environs are.