Gorillaz did an ext(p)ensive world tour with a massive amount of artists and a lot of guests depending the venue (like Bad Bunny @ Coachella). I guess the guys can handle $ that kind of tour; they are a talented grown-ass men with nothing to prove to anything.
I see this comeback like a big party, to celebrate music and a legacy, spending some time with old and new friends and chill their asses off. They deserve our support whatever they want to do.
What a time to be alive. First Oasis and then Linkin Park.