Apparently there's a limit on replies to a thread. But indicating that it's the publisher's content and not yours is not a dangerous line of thought it is the common line of thought through which all copyright which has been a thing for many hundreds of years now is based upon. My point was simply about the publisher ensuring that the content that they publish is received as intended by you the consumer. You seem to be conflating that with a consumer doing what they want with it after they've received it. What we're talking about here is third parties that are neither the publisher or nor the consumer altering the content but still pretending it is the publishers original work. For many hundreds of years now this has been an egregious violation of copyright and nothing about an "in an iPhone world" changes that.
Your argument seems to be based around the core principle of you don't care if a third party alters content that you're trying to consume that you may rely upon to be accurate. Additionally your argument seems to be based around the hubris that you would be able to detect the alteration and simply switch connection methodologies to get around it. That is a completely false premise to base your argument around. You have no assurances you would be able to detect the alteration and you would also have no assurances that simply changing from cell to Wi-Fi would get you around where the alteration is made because you have no idea where in the chain of connections the content has been altered.
All of this is reasonably solved by using an and to end encrypted connection. Is it perfect, no, there is always ways to alter data inside the encrypted connection but these are difficult ways. So we're back to the idea of reasonable assurances that what was published is what is consumed.
The fact that you do not care that content you're consuming is totally untrusted does not mean the rest of the world it needs to facilitate you and continuing to consume untrusted content. If you wish to pursue consuming totally untrusted content you're free to do so with many proxies because even your old device will support a proxy method that will allow you to continue to have untrusted content. As for the rest of the world we are far better off understanding that there is a reasonable assurance that what is published and what I'm consuming are the same thing.