Don't take it the wrong way... Seems like they care. Some people have tendencies that others may find irritating. (caretaker, scheduler, matchmaker, etc)
Since this go-'round was a new situation, I'd recommend figuring on how to handle it if it comes up again. Perhaps something like "Hey guys, I can do this. I need the practice."
Could be anything.
- Protect and care for the group (ie. you.)
- You stopped and looked irritated just long enough. (They mistook that look for befuddled?)
- Urge to practice up on ones flat-repair prowess.
- Need to use up that quickly hardening rubber cement in the kit.
- Just feeling super helpful.