There are some excellent porn communities on reddit I don't see why it should be an issue here. Those communities post more than just links to videos on other porn sites, however. I agree that doing such is low effort and shouldn't be rewarded. Sub par articles should be the issue focus not just porn in general.

That being said the community itself will decide what content should earn rewards and gain visibility. Extra censorship, IMO, is counter to the philosophy of decentralization.