Well, ALPA finally addressed DPA head on. The most disapointing thing in their latest missive was this one:

Since the DPA repeatedly states their “(i)nfluence (will be) used solely for Delta pilot mandates,” it may be they are unclear that the organization they wish to join, CAPA, represents mostly pilots in competition with Delta pilots, and many of those fly regional jets. This would appear to support the idea of a national professional organization like ALPA.

Doesn't ALPA represent pilots that are in direct competition with us? and doesn't ALPA also most represent regional pilots?

Why did that memo sound like it came from the White House press room?