Different scenario but similar situation -
Someone I know well has a Father who was a highly regarded Scout Leader.
The effort and commitment he put into it was admirable, and people used to talk fondly of his achievements.
More recently whenever I've heard the subject mentioned in passing, I notice people tend to make nudge nudge jokes - at best.
Some look downright uncomfortable
and I have witnessed one person actually get a bit worked up. Over what?
It is a tricky one. We have to protect our youngsters, but fear and unwarranted innuendo helps nobody - certainly not kids.
As Barry and and qccfc have mentioned to be a coach you must be DBS checked - in the same manner that Teachers do.
While there is no room for complacency, the opportunities for those looking to engage in abusive behaviour are surely diminished these days thankfully, due to much, much better awareness and vastly improved levels of safeguarding.
I hope - for the sake of the kids - that nobody stops wanting to be a mini / youth sport coach.