Why are people on Reddit so sexist and weird compared to GAG?

I see lot of age gap scenarios on reddit, whether they are real or fake I don't know but lot of people on there are sexist in how they treat the older person if they are a man or woman. If its a man he usually gets hate, if its a woman its defended to an extent.

I see gag being more open to this, the men specifically defend the older man here, while women judge.

Why are people on Reddit so sexist and weird compared to GAG?
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