Im not a fan of the constant screaming.
I often find screaming much more impactful if its combined with softer vocal passages, and it helps to make the song more dynamic and varied.
Much like a guitar solo. If a track was 4 minutes of guitar solo's I would get bored pretty quickly, but if a guitar solo hits, i.e. after the second chorus, it can completely change the track and renew you interest in the song