Mainly that you said you have never heard anyone talk about passion in this respect as well as the description of ignoring loved ones. Speaking as someone diagnosed with ADHD, I have intense periods of hyperfocus where I can spend days on a topic to the detriment of my wife. It's possible that this is truly passion but over the last few years I've been able to "average" my hyperfocus so I don't go all in as often and then realize later that it may have been a passing notion that I can't sustain indefinitely.

If you're interested, the topic of hyperfocus comes up very often on the ADHD subreddit.

: https://www.reddit.com/r/adhd