If something is destructive or not depends on the circumstances though. If there is no need to keep these informations available, there is nothing wrong with working on one layer. People who paint often use one layer and just paint on top or merge them after painting on another to see if something works out.
If you wanted someone else to work on something it would be destructive, but if you are the only person using it and you are sure of what you are doing there is nothing wrong with it.
Also there is a big difference between expressing yourself and being disrespectful. And the way you communicate it is definitely in a tone that is leaning towards disrespectful. If you feel like you can talk down on us, feel free to do so. But I guess this was my last tag on here.