It’s so hard to really answer this, but personally I think that they could given their history with the festival and their appeal to a core part of the festivals demographic.
They probably wouldn’t appeal much to the under 35s, but big chunks of the SE Corner or Silver Hayes don’t appeal to the over 35s either. Not everything has to appeal to everyone.
Saying that they have sold a lot of tickets for their shoes since they came back. More than some acts who people would consider consider dead cert headliners…