I'd say they are. Whether or not that's visibly represented at Glasto (if they play) is anyone's guess, and largely depends where they play. Their latest record is fantastic, in my view.
I saw all 3 headliners that year, possibly the last time I’ve done that. I was 2nd row for Springsteen so it was still a great experience for me but acknowledge the disappointing show. He played a Joe Strummer song at the start which seemed a mistake (a relatively obscure number too).
There will also be Dads there who constantly listen to new music, enjoy Elbow's amazing live performances, and who simultaneously think the 1975 are utter horse sh*t.