Its very poor form IMO not to at least stop and ask if someone is OK when struggling with a flat or having had an accident…
I’ve been ignored when in trouble in the past, and I’ve had people go above and beyond to help me… I’m always grateful for the offer, even if its not required, it just shows someone is a decent individual IMO…
I suppose there is an element of that “Newbie” thing especially with MTBing, I default to being friendly and helpful, after years of riding bikes, Newer riders often seem to be a bit shy, stand-offish even aggressive to people they don’t know… If I can lend tools or give away a tube I will, hopefully helps them get into the “Community of cyclists” mindset rather than all being “Individuals on bikes”…
Its all Karmic too Innit, if you believe in such things…