this first person on this thread to call people names is the OP - came back and did it again while apologizing (?) in the same post.
You really don't know where or how any of us ride. We may have been thinking on these trails years ahead of you.

One day, some self appointed trail police guy coming the other way was hand-motioning and yelling at my daughter to slow down - I just about stopped and slowed him down. What my daughter is doing on her half of the macadam is none of his business.

I'm friends with the Actual police and Trail Stewards (know them by name) on my greenways/MUP. I generally ride as fast as conditions permit, and I do pick my gear so I will not exceed 20 mph.
I don't even have to demonstrate my panic stop skills to you. But I've had kids hiding behind pylons and playing chicken by jumping across the path in front of bikes.

I will say this again. The guy who yelled didn't hurt anybody, and doesn't deserve name-calling or blame for this incident.

I was behind a runner yesterday who intentionally does not move over when asked to by a bicyclist. Some bicyclists blame that selfish attitude on other bicyclists. But one's selfishness can never have anything to do with another person (or it wouldn't be selfishness). The next random runner was an old guy who just didn't have his hearing aids. I will admit muttering something obscene about the former and laughing at the latter.

Share the trail. Big signs all over. There are going to be good days and bad days. As much as we would like to Control other people, all we can control is ourselves.