For thematics of fantasy game it makes perfect sense. Of course everything is natural in a sense that is part of nature; uranium is natural so nukes are natural! But this is not what the theme means!
		
		
	 
And the theme is stupid. Sorry, it is. 
What makes taking a piece of metal, heating it up and beating it into shape different than taking a piece of metal, heating it up and beating it into shape? Nothing right? 
So why can my druid wear a magical golden crown of power, but I can't pick up a plain iron shield? Both have mechanical impacts, both are made of metal, one is more "civilized" than the other? Can my druid read a book on Alchemy and gain proficiency with Alchemists tools, discovering the power of SCIENCE! ? Yep, no problem. Can I wear an antiquated bronze breastplate? No, too civilized. Can I use a gun if they exist in the world? Yep, perfectly fine. 
It is completely incoherent, and makes no sense. And while you can choose to play a druid who rejects society, who rejects banking and and everything else... you can also play a druid who doesn't. Who instead embraces and tries to merge civilization and nature. And that's a good concept too.
	
		
	
	
		
		
			I was trying to honestly engage wit your concerns. You keep talking about mechanical roles and comparing numbers to those of other classes, so it kinda seems that is important to you!
		
		
	 
I recognize it as an issue, but you are the one who keeps bringing it up, even though I've listed my concerns and mechanical power isn't the top one. 
Now, does that mean I want you make some sort of weird virtue test armor by making a metal armor with identical stats to leather? No. Because that is just dumb. Because letting a druid wear something that gives the AC of Breastplate or Half-Plate isn't a buff. It is expected for the class.
	
		
	
	
		
		
			That Crawford says druids do no become overpowered if you give them better armour is not the same than it being expected. Also this is the guy who thought that twilight cleric was perfectly balanced thing to put in the game, so sorry if I take his opinion on this with a grain of salt!
		
		
	 
Played with a Twilight Cleric. Guy was thinking about switching classes because he didn't feel like he was really contributing enough. They are good, but they aren't busted.
	
		
	
	
		
		
			Then why you keep comparing their AC to that of other classes?
		
		
	 
Because it is an issue. Third or Fourth on my list. But, I do know that there are many people who point to this armor restriction as a problem for druids. And, I can see the point. If my druid is supposed to be a frontliner, using spells like Shillelagh, Thorn Whip, Flame Blade, and others, then having a decent AC is useful. I've been playing a Druid, I am constantly on the frontline with the Barbarian. It is a legitimate concern. 
It simply isn't my top or only concern. I can have multiple concerns.
	
		
	
	
		
		
			Having them stick to what rules currently allow is not a nerf. Giving them more than they currently get like you want however is a buff. And as I've said many times, mechanically incentivising things that go against the theme of the class is terrible game design. It is the literal opposite of what class design should do.
		
		
	 
No, no longer continuing to deny them their full use of their proficiency is not a buff. They were given medium armor. They can use medium armor. If you've got a huge issue with them using metal, which I think is a stupid restriction, the minimum you could do is make providing alternatives easier. 
It really comes back down to a question I asked a while ago. If you really think that people don't care about this tradition to the point that as soon as it is removed, they would all invariably flock to breaking it... why do you think it is better to simply make the rules force them to follow that tradition? "Class Identity" is a nice thought, but I don't see how my character is less of a druid because I don't care about this stupid tradition. I still have many many other things that I do that make them a druid. And that is my choice.
	
		
	
	
		
		
			But didn't you want to wear a starmetal armour? 
		 
		
	 
Ha. Ha. I'm laughing. Ha.
	
		
	
	
		
		
			But at some point it is better to just accept that concept really is not a druid any more and would be better represented by a cleric.
		
		
	 
Except that you are wrong. Druids are more than clerics who don't wear metal armor. And if you think otherwise... why even bother caring about the druidic identity. That is so weak of an identity it doesn't even warrant talking about.