With that as your focus, I'd say feel free to be super happy. Working with a group that has a gold album upon release is the kind of thing that builds a songwriter's career. More Matty Healy songwriting in megapop automatically means slightly less songwriting you don't like in megapop. Looking at the past 50 years, I don't see performers writing for other performers creating most of the music that contributed to radio pop getting a bad name.
It's good for Healy, The 1975, 1D (longevity via evolution), and perhaps a very good challenge to some of the less-inspired megapop "hitmakers." The only potential loser here is someone deeply invested in what he/she thinks The 1975 "should" do, and there are tons of bands that person could support. Anyone who can get 1D to answer the phone right now and doesn't work with them is making a terrible mistake (IMO).