He likely wants these movies to die so movies that interest him can be made in their place.
I don't see how that logic is all that much different than the bunch of people wanting BvS to do horribly at the box office so the DC universe changes direction.
Well, his thing actually has a chance at happening one day.
Even with DC. WB would sooner just stop making superhero movies than do this massive shifting of gears that some are clamoring for.