Some of us operate by Crocker's Rules: http://sl4.org/crocker.html As the page says, Crocker's Rules don't magically allow you to insult others, but they don't magically forbid it either. They're purely a signal for others when they communicate to you.
General standards of conversation (aka not being a dick) forbid you from insulting others. Your adoption of Crocker's rules do not change that, as clearly communicated by the linked page.
> Note that Crocker's Rules does not mean you can insult people; it means that other people don't have to worry about whether they are insulting you.
Your tone still matters unless you are communicating with someone else who is operating under Crocker's Rules.
Two people using Crocker's Rules should be able to communicate all relevant information in the minimum amount of time, without paraphrasing or social formatting.
While I like the idea of that in theory, I have to say I think it's operating on the somewhat flawed premise that tone and other flourishes offer no informational benefit. I view tone as a "hint" for the context of the surrounding statements, and as such, it can alter the interpretation of them. This is useful for efficient communication.
I think Crocker's Rules will help people will communicate the correct information efficiently, but I don't think it's necessarily in the minimum amount of time, just a better average case time. It's probably very useful in situations where the shared social context of the communicating parties are distinct enough that the hinting provided by tone is misinterpreted, which can be common on the internet, where disparate cultures clash and there's no visual channel to additionally help communication.