Isn't this going to kill features that only some apps have or offer? What if one day Signal, Telegram or WhatsApp want to implement something "different" that could make messaging better but this policy is making things harder to implement because it would be impossible to make it interoperate with other messaging apps?
I don't get why you would regulate such a thing. I get the feeling that people here enjoy seeing big tech companies "owned" by big governments without actually realising that it is actually going to make things worse, that's what regulation does in most cases.
That's still possible. The company owning that platform just has to ensure that its services are accessible by any client. Protocols/APIs can still be further developed or brand new ones introduced. But they still have to be documented & be made accessible.
It starts off with arbitrary definitions of what pornography is (https://le.utah.gov/~2023/bills/static/SB0287.html): "nipple of the female breast"
You can suck on it when you are a baby, but god forbid you ever take a look at it again before you are married. What's wrong with these people?
Even public nudity laws differ from city to city (e.g. in California), so clearly, people aren't aligned at all on this subject (I'm emphasizing the arbitrary nature here).
Forbid and censor the things you're afraid of educating on.
This trend reminds tangentially of https://en.wikipedia.org/wiki/Comics_Code_Authority.
On a closing note, I do recommend supporting organizations like https://www.aanr.com/ who also provide legal help to citizens in states that'd rather have you wear a burka than show a nipple.