Layperson infantalisation and anti-expertise sentiment are two sides of the same coin.
Both are anti-intellectualism.
If you treat people like children that should be content with the answer "because I say so", you shouldn't be surprised if adults, who are in a position to retaliate, don't just take it.
"You didn't spend X years studying this" might be true, but not even trying to explain something doesn't even give the other person the chance to realise, they lack knowledge.
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