You're asking the dev's to go through and "delete" what you feel is 'old'? This would have dramatic effects on the games economy and mechanics.

What about cooking/crafting? People cook lower stat/level food to skill up on. They couldn't just make Sublime Sushi from the get go.
What about 'older food' that is used in quests/missions?

I don't think the issue of food as an example is really that bothersome for the populous as a whole. I would also imagine it would be rock bottom of the list of priorities for SE as it would cause too much work, for no real reward.