What I have noticed, not in this forum but another forum, is other folks who want to appear smart or clever, say the least amount.
Then later you learn, they aren't particularily well-read or espouse a very strong extreme opinion. But they appear brilliant initially, because they say a couple of words but don't back up their words with an example or explanation. They refuse to link to sources of info. espousing same strong opinion or evidence...especially on something they never even personally experienced at all.
One needs to be careful of such folks on serious topics ie. health, politics, finances, etc.
It's pretty terrible to see. A guy who has never been a father of babies and young children started verbally, but politely hammering away on a father of 2 young children, why he couldn't organize his toddler children properly according to time schedule often. Yea, sure. What a clueless. Must be kid who never pees accidentally on their pants at wrong time, never screams, never lost something (ie. a shoe/mitten) or didn't pay attention to daddy.