You'll get there. I hope you don't but expect you will.Have to say I've never really witnessed this in kids football yet. We are only at under 11's I guess. I've seen the coaches squaring up to other coaches / parents but apart from the odd shouting appeal to the ref for a penalty or something, I haven't really seen any abuse.
Like with many things in football (diving, time-wasting etc) if the authorities really cared, and really wanted it eradicated, they could do it very quickly. I think it's too much to expect a 14 year old to red card fully grown male coaches and abandon the game if he's getting abused, but if he was getting abused then once the game has finished and he's gone home away from the coaches and parents, he should just be able to award a 3-0 victory to the opposition. They'd find out later that day and there wouldn't need to be a confrontation on the pitch or after the game. It would stop fairly quickly once teams started losing every game.
When I was coaching U9 and U10s the ref was very often a kid from a higher age group of the home club. The home club provided the referee most of the time and it was understood to be best endeavours.
The problems start at older ages with organised league football (even though results are not officially published). So suddenly I was at an under 13 game my son was playing in when two sets of parents, two coaches and a bloke in a mobility scooter who all represented a club who shall remain nameless and called Newhaven, confronted the referee on the pitch at half time over one decision. We then had to escort the young ref off the pitch at the end to help him get to his lift.
I think it starts to happen at an age when the parents suddenly realise that little Jaydon isn't going to be buying them a mansion in the next 10 years after all.
However, while I have every sympathy with young refs such as those in the OP, some of the older ones really don't help themselves. One old boy in our league never left the centre circle, insisting he could see everything perfectly well from there. Another gave the kids a lecture before hand that was just a set of meaningless platitudes, such that all 22 kids were laughing at him before the game kicked off. Another time a club supplied a 'linesman' who must have been at least 25 stone and didn't move all game.
I do understand, of course, that some of these mad old boys still have to do it because of the abuse the young ones get and because they have a sense of duty and responsibility that comes with the best volunteers. But still......