Entirely possible. I'm just surprised that Jon didn't mention him at all. It would've been simple enough for him to say David was "still recovering" or "working on his musical" or whatever while he was naming all the others (and where they came from) individually.

Maybe David was there and Jon just forgot to mention him. And even if he wasn't there, the reason could be something else altogether; something we don't know anything about. Who knows. They could have decided the keys weren't needed for these 2 songs.

TBH, I don't recall where people have said that either David or Tico isn't happy or wants out of the band; but I coulda missed it.