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I don’t think so. There are pros and cons of tough classes, but considering NMF qualification at that stage is ridiculous.
Doesn’t sound like it…
In any case, I don’t think it should necessarily be discussed at length. I am incredibly grateful that my parents “forced” me to do thinks at a young age that set me up to achieve greater successes than I could have on my own. You have no idea how many tantrums I threw to get out of taking gifted classes in middle school. But thankfully my parents had more foresight than 12 year old me did. 
Very young children should not be making important decisions about their futures. Who cares about 6 years from now? At this moment the kid has a knack for math. It’s so much easier to drop back than to get ahead later.</p>