I think “dark humor” can be a pretty broad term. You were just poking fun and lightheartedly highlighting a real risk of not getting a new charger. On the other hand, I know people that have had house fires and lost every material possession they had. Keepsakes of lost relatives, photo albums, cherished souvenirs, etc. some people have lost loved ones. The older you get, the more you accumulate tragedy, be it first or second-hand. Humor that hurts or scares people isn’t kind, even if you don’t agree with their sensitivity. Then again, when you collect enough tragedy, it can become funny again because you just have to laugh