True skates are used by players on 26 of 31 NHL teams. Doesn't get much more 'high level' than those teams.
77 NHL players use True skates. The True pro custom is the third most popular individual skate model currently in use in the NHL. Again, doesn't get much more 'high level' than that.
Look, I'm not discounting what your son says about the skates. If they're not for him, they're not for him. And that's completely fine. They are (relatively speaking) heavy and, when compared with the Mako, are a little 'clunky'. What's more, every player is entitled to his/her opinion. However, you seem to be insinuating that True skates aren't for 'high level' players, and that's just not true. Some of the 'highest level' players in the world use True skates and seem to be doing so without 'getting slower'....