Is there a button to delete all? If not, would be good to have one. Removing 40 decks every major update is quite mildly troublesome.
While I only have one deck myself I can see why it could be convenient to be able to mass-delete. Deleting one by one is really quite tedious when there are more than ten or so things to delete, especially with "Are you sure?" confirmation pop-ups.
Realistically speaking, it's rare that all decks become obsolete after a new patch. Maybe some players just automatically throw everything away and start over. For me, I rather have a sorting order feature. Then I'll just move the new (or still viable) decks to the top. I want to avoid removing old decks because sometimes I still use them as templates for improving decks.
It's more about that you want to make 40 new decks after such an expansion as Iron Judgement and the limit is only 40 so you have to make space by deleting old ones, you know.
Found a Reddit thread, someone requested that too
Found a Reddit thread, someone requested that too