Porn is performed by consenting adults and consumed by consenting adults.
That’s why porn made from human trafficking, revenge porn (ie leaking nudes of an ex) etc are illegal in most sane countries.
The idea being that porn doesn’t hurt anyone.

Hate speech is harmful. It’s purpose is to hurt people.
So yeh, it should be illegal.
I have no issues discussing hate speech. I do have issues with hate speech being used.