I probably downvoted 20% of the time I tried to upvote until I realized I need to pinch-zoom super close and pay attention to the "on clicked" look of the link for the few milliseconds it appears.
Same here. I assumed flagging was something that required a certain amount of reputation. I've never even purposefully tried to see how to flag something, and I have 4 submissions flagged.
I knew I was doing it, I just hated that I couldn't fix it myself!
It also seems like flagging an article now no longer hides it, which is extra great since the unflag link is right there without even needing to visit the profile to undo a mistap.
If it's any consolation, the page doesn't show flagged submissions that ended up being removed, so you're likely only going to see stuff you've accidentally flagged.
Flagging could do with a confirmation prompt perhaps.