As we have just recently completed a renaming of all of our ~150 payment methods which resulted in the old ones being marked as expired, we now have a lot of old data shown in the admin panel. This makes it pretty hard to figure out what information is important and what can be discarded. Unfortunately, it is not possible to filter the list of all payment methods to only include ones that are not expired.
I would actually argue for filtering that is applied by default as working with expired payment methods is the exception and not the norm (at least for us).