It’s not that it reduces load times, it’s that you would need a lot more resources, especially servers, to persist every single map in every single player’s game.
The devs want to fix this, so we should expect it at some point in the future. No idea when, though.
It’s more than that, though. If you let resources ramp up too much, you simply don’t have enough space for other things, so servers would stop accepting players because they’d have no more room. It’s not just load times that’s affected by it.
It would even affect performance inside a map, increasing rubberbanding, lag, etc.
Also, you only mentioned load times, not server resources.
Also, I don’t know why you felt the need to reply aggressively to a helpful comment to your comment.
We’ve all done that.
In this respect, the areas respawning is actually a good thing: it teaches new players not to try and sell stuff!
Well, I am sure it is true nowadays.
But remember that the game was running offline, without multiplayer, for 4 years, and the areas system was the same. Server resources might be why it is hard to change nowadays, but not why it was implemented in the first place. I would bet more on load times.