If you text messaging is free. Does that include MMS? I am not sure why it a blue or green bubble is a big problem? You would still be able to send messages or

If you text messaging is free. Does that include MMS? I am not sure why it a blue or green bubble is a big problem? You would still be able to send messages or media content? The only difference I can see is the lack of end-to-end encryption and reactions (e.g. like a message)?