don't know about "bother", but i do think the term vape 'pen' sounds really dumb. Thought so the first time i ever heard it, and still think so, even though i know quite a bit more about
vaping now. it's not anything
LIKE a 'pen'; even if some of them do somewhat resemble one, thats not a reason to call it that - it's completely unrelated. I have less of a problem with 'electronic cigarette', though that's not my favorite term either, at least there's some kinda logic as to why that term was used when they were first invented.
and yes it also annoys me when people refer to vaping as smoking.... i've even heard quite a few new vapers call it that, even as they themselves vape - but in the interest of educating newbies without judgement, i might give someone a
very small pass on that.... like, on their FIRST DAY,

- or the first time someone sees someone vaping.
As far as non-vapers calling it that, even after having it explained what the difference is, but willfully refusing to take the point or understand the distinction... yah, that quickly goes from annoyance to full-on irritation.