I too, have lived full-time in my bus for the last 2 years, but since I live off-grid, and I am the only member my HOA, I didn't see that memo either, heh, heh!
There're those who say you (read: they) can't do something, and there're those who defy conventional thinking and change their lives and their world. . .your choice. . .
*Disclaimer: The above statement refers to all things legal and above-board. . .