Ok so the top raiders need to have a clean UI so they can clearly see everything. But top raiders also don't need to because they already know what's going to happen off memory right?
Addon memory is not an issue unless your computer is 7 years old. It's such an old argument that has no merit anymore. Have you even tried configuring WeakAuras? Or are you really going to say DDR is hands down the best when you haven't even given something a fair shot? I love DDR, have been using it for years. I haven't tried rune addons since WotLK so I'm not gonna say it's the best.
Are you even top 10 in your region? How can you make such claims? It baffles me how people are so "my way is the only right way" in an opinionated situation. I'm a fairly serious raider, not top 10, but always maintainted top 100 US. It doesn't matter, though. If I didn't raid, if I was 10 top, or top 100, I'd still just use whatever rune addon is the best, in my personal opinion.