Well, it’s a little more complex than that. he’s the good guy in macro scale. (if you believe his own presciece. Which is admittedly dubious due to the obvious conflict of interest. But Paul shows on numerous occasions that he can indeed see the future.) everything Paul did (and by extension everything Leto II did) was to guarantee humanity’s survival as a species. Paul essentially sacrificed billions of lives across the empire in order to ensure humanity wouldn’t go extinct. That being said he is definitely not the good guy to the Fremen. He and Leto II fucked that group of people over big time.