A million years ago, back when Reddit still existed, I used to hang out in the Firefox Subreddit and basically helped out with tech support there. At first, I just answered all the low-hanging fruit, but also read the answers from the more experienced folks and learned a lot from those.
And so, every so often someone at work (usually colleagues) will remark that their Firefox isn't working as expected. At which point, I have my ten minutes of being a Firefox support professional, where I walk them through the usual troubleshooting steps and we get the issue resolved in no time.
It's always kind of funny, because no one expects it. Like, it is a tech job, so it's not unusual for a colleague to have deep knowledge about a technology, but with browsers, people just seem to think there isn't much to know about them.