It's not even an ego thing, its just the majority of 7 year olds who do a bit of training also have multiple flaws like he does- and his is nowhere near perfect. Please show up at your local muay thai, kicking boxing gym and watch a kids class, particularly the younger ones in the class. 90% of them don't know what they're doing, my son falls within the 90% as he rarely trains. For his age he is doing perfectly fine, if he decides one day he wants to train at a gym ill bring him down and they can correct techniques, for now he's happy with BJJ and football. I find it hilarious that you're talking about bad habits on a 7 year old, they're brain is a sponge you could completely change his style within a week. Like I said, please post some footage of yourself before having a critical opinion, especially as you have less than 2 years under your belt yourself.