No one, NO ONE, can be glad that ANY Christian denomination has these problems. It’s a sad note for any reason.
Sadder still, when self-imposed.
You assume TEC (as they now abbreviate their name) is still a Christian demonination. Much of the reason for the decline in numbers is that Christians have fled TEC to “swim the Bosphorus”, “swim the Tiber”, put themselves under Anglican bishops from Africa, where Anglicanism still exists in its classical, identifiably Christian form, or set up “continuing Anglican churches”. What’s left, the nice old church ladies whose first loyalty is to their parish aside, is at best as Christian as the libertine strains of gnosticism from the first few Christian centuries.
The moment “Anglican inclusiveness” started including not just low-church evangelicals, broadchurchmen and Anglo-Catholics, but folks who deny tenants of what Lewis called “mere Christianity” (like the Holy Trinity, cf. Bishop Pike) the game was up even before the slide into embracing secular “morality”.
The question is: is the Epicopal Church Christian any longer?