There’s a difference between someone being impatient because someone is busy or doing something within a regular time frame and getting irritated when there is a DEADLINE(like leaving the house to get somewhere and you’re almost/already late) and they just saunter everywhere and take their sweet time
This isn’t about being high maintenance though—you absolutely need to take care of yourself and your own schedule and a mature friend would hopefully understand being an adult with a busy sched. It’s inconsiderate to consistently be late or make your friends be late though, and I think that’s more what this post is about