To my knowledge they're revealing this for the first time in this quarterly report. As for "then what", there's always the possibility of a shareholder lawsuit

To my knowledge they're revealing this for the first time in this quarterly report. As for "then what", there's always the possibility of a shareholder lawsuit or Musk using this as a pretext to back out of his offer. That said, the OP indicated the impact on MAU is pretty small (I didn't check this myself), so in the end it's probably all sound and fury signifying nothing.