Not unique to ADHD, perhaps, but the added step is a bigger deal to those with ADHD. Having to stop what I'm doing to make a call makes it more likely that I won't complete my original task. I have trouble completing tasks on a daily basis so needless interruptions like this make me feel more annoyed than would probably be considered reasonable by someone without ADHD .There's also nothing that's terribly unique to ADHD because our symptoms are things that happen to most non-adhd people occasionally turned up in frequency and severity to a debilitating degree.
Nobody here is a doctor trying to diagnose anyone. We're simply sharing memes that we feel are relatable, no matter if it's relatable to normal humans or not, is a matter of exactly how much it effects your life.
For example, someone in this position with ADHD might have issues with talking on the phone because they don't remember everything they need to ask. This gives them anxiety enough to not even call and might even hinder their mental ability to move on to another "task" because their task of calling about the desk, can't be done.
All in all, if a behavior seen in this community effects you in a REALLY negative way, see a doctor.