i dont understand the downvote patrol jumping on those who want to protect their machines. there are some things you just dont let children do unless they are at an age to understand how to properly use that thing. 1k+ machines fall into that category. i dont think you should ever stop a child from playing if they want, but you should certainly be allowed to tell them how to use that thing properly if youve put your time and money into it.
once i was playing with a three year old and obviously all she wanted to do was double smash, but she also didnt want to die, so once i pointed out that she wouldnt die as often if she tried to flip at the right time, she never did it again. point is, youre not doing the machine or the child any good by letting them be a coil burnin double flapper. they dont need to be grand champ, but even the youngest of the young understand that things are more fun when youre better at them.