Very good write up! I can get caught up in the latest and greatest stuff. More equipment then corals or fish, but not everyone has room or money for the new gadgets. Or the desire.
Anyone new needs to research and learn, just like we all did. Then set up their tank to their liking. No two tanks are the same, ever.
Anyone who thinks they know all the answers all the time is wrong. There is no perfect tank, perfect answer.
Above all, as you said it is pointless to berate a fellow hobbiest just cause they do things differently. That's what makes this hobby so cool, the variations and the different ways to meet, basically, the same end goal of a beautiful tank.