A Lieberma wrote:

Correct me if I am wrong as I have never been in the ADIZ, but in the ADIZ,
you will hear IFR cancellation received, but you WILL NOT hear "Squawk VFR,
have good day"

Correct, they usually will remind you to "remain on this squawk until on
the ground" but I don't think there's any obligation that the do this.