Only partially true. You have a choice to connect either a Landline (VOIP also works in most cases), or you can connect the your Broadband connection. If you connect either a POTS (or VOIP), or your broadband internet you will avoid the $5 "Phoneline" Fee.
I added an HDTV to my bedroom. Had a 622 and wanted another one or a 722. Dish wouldn't add one to my account without giving up my 625 for my 2 kids room. So I swapped my 622 for two 612s...1 for the living room and 1 for my bedroom. The 625 is still in my son and daughter's room.