Ya, sledding crowd is older around here, and really overall in general.
What ya ride I don’t think is a factor most think of when riding, other than perhaps a sled not looked after causing potential break down, but even new sleds leave you stranded.
Same as pace, a slower reasonable rider is not that far behind when you stop at intersections to wait for all to catch up, plus is it really about the race to get to your destination or about the ride it takes to get there, at whatever pace and enjoying that.
It seems things change more so due to weather, conditions or peoples life that changes, that cause a change in plans.
Personality conflicts might be a bigger factor for some.