They’re probably vagante former Catholics but still they’ve taken this to a logical dead end, including not attracting young people.
Ironically such people don’t become Episcopalians, because of the Thomas Day factor: many Episcopalians worship too much like the sound in the church do! High church, altar rail and all. (Opponents in the culture war, allies in the worship war.) Also if your parents were from Ireland you won’t join the English denomination. So they try to turn the church into a mainline denom instead.