Tobs makes for an okay fantasy writer but a mediocre porn writer.
I wouldn't go this far, he's a mediocre fantasy writer and a generally terrible porn writer. So many of his sex scenes are just fucking awful, full of terrible euphemisms and bizarre thought interjections, taking forever to actually get to the sex part and missing the entire point of the scene. He simply doesn't understand how to pace erotic content at all.
His non-sexual stuff is a bit better, but it's still very amateurish, ridiculously overwritten and in desperate need of a vaguely competent editor, or at the very least someone to tell him when to drop ideas or characters that simply don't work. Writing should not be an exercise in jerking yourself off over how cool a line you thought up is, or how "angsty anime samurai" is some super unique compelling character concept.
That's even without discussing the issues specific to the game being an RPG, not least of which is a hilarious lack of player agency or input, or just straight up writing completely unrelated stories that have nothing to do with the PC or main story.
He certainly has potential, but the internet is full of mediocre fantasy writers with potential, and his attitude towards criticism has always been fucking awful.
I must admit that he was the one that was writing the early/interesting plot/story development (Convocation of Mirrors).
I don't think convocation was a good piece of fantasy writing, the whole stuff with the gods is just kind of overdone and boring, and a random ass fucking phoenix wright legal battle in the middle of a porn game is a stupid idea (especially when tied to a giant exposition dump).
Kas has the only really interesting motivation/story in the game, as far as main plot stuff goes.