I think you're taking my points to be more profound than they are:

1) The 80 was in a sense made up, but I'm basing it on the Pareto Principle which is a standard rule of thumb, and which has a strong corollary in User Interface Design. 80% of the tasks in a programme can typically be done with about 20% of the function. As such, you want to hide the majority of information because it distracts from the common things the user is trying to achieve.

2) I'm not dissuading people from using Addons, I use a ton and I've written a couple myself which are available on Curse etc. What I'm encouraging is for people to think about what the number 1 most important piece of information they need to know is. Once you know that, each time you try to add more information to you UI ask yourself if it's distracting from the primary things you need to know, or not. Just because information is useful, doesn't mean it's worth space on your screen.

3) Definitely not saying don't use raid frames, just talk. I'm saying don't use raid frames as an excuse not to talk. Good communication plays a key role in a raid heal team.

After reading your points, I think there is nothing much in your reply that I disagree with except your interpretation of what I said. I'd encourage you to read my first post again and maybe take me a little less seriously :)