Eh, someone else in this thread pointed out that Elon liked a post by Jack Dorsey posting an image where Signal has taken the #1 spot on the apple app store, since Parler is gone and no longer #1.

I'm also seeing now that he's been promoting Signal over Facebook recently. No mention of Parler or Gab. Maybe that's nothing, but I can't imagine he's just unaware of those two, yet he's promoting Signal. That's signaling something to me (pun intended), so I'm pretty much done expecting anything from him in this area unfortunately.