Not supporting AOPP will lead to helping the government to fence people on exchanges, and our motivation to add direct support was exactly to keep the government from doing so. 1/
The message for signing is composed of information already available to the exchange. The address must be sent to the exchange to receive the coins. 2/
Without it, regular users can't get their bitcoins out of it. The governments prefer people to stay on KYC platforms, not run for self-custody. 3/