Going to split this post into three parts.
First: Let's not start broadly accusing classes of encouraging bad RP. It's an individual thing, and often done innocently. Clerics have been less priest and more vagabond with Hammer of God, plenty of Paladins have committed atrocities with full OOC belief that they were acting Lawful Good, Barbarians have acted as the devoted servants of Civilized Law, Monks have been inconsistent anarchists - if there is a "mistake" to be made for a class, it's been made, and if there's a way to make a class weird, it's been done thrice. Druid's takes the form of animals, but most classes have the potential to be memetic or uncomfortable.
Things have gotten a lot better and people a lot more serious over the years, so if you see something, say something. Seriously, send in reports. Please. Preferably with screenshots, but without is at least something, too. There are like three active DMs at any given time for the teeming masses, and I am almost certain they're usually occupied doing something they enjoy rather than happening to catch Smokey the Bear getting hot in the forests.
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Second: The chances of a base class becoming application locked are, as I understand, about as good as a vault wipe. It's not really worth talking about.
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Third: The meat and potatoes. Balance discussion!
Archer druids get use out of casually slapping 4d6 damage onto their bows. So do Shapeshifters, and casters who are forced to fight in melee (because shapeshift lets them), and odd druids who enjoy doing things like picking up a scythe and enjoying +4d6 on x4 crits. Arguably the shifters and weird weapon cases will get better use out of it, too.
I do not think Zen Archery druid, an archetype that was alive and well as far back as in 2008 before being able to add 14 average damage to each shot, will suddenly be rendered unplayable by the change. Owl's Insight is potent, you can extract plenty of Mighty bonus via Bull's, Ram's, and Aura of Vitality, and you don't need to forsake any of your casting potential for so doing. You won't hit the highs of an arcane archer, a martial almost entirely dedicated to combat, but the AA also won't be casting Stonehold and Creeping Doom before unloading arrows, or popping a cheeky Heal when things get dicey.
A single additional 1d6 that stacks with varnishes, enchantments, and weapon properties is still strong. On average, it's the equivalent of someone using Divine Might with 16 Charisma. That's typically worth spending a feat (two, because of Power Attack) on already.
If we think Paladins or Sorcerers (I'd say wizards first, since Sorc only shines post-14 and come with skill, feat, and RP frustrations) or any other class need to be nerfed, that should be brought up in its own thread. It shouldn't be used to argue whataboutism for Druids. Personally I think most classes are either fine (yes, even the casters) or too weak (late-game pure rogues, assassin at all points) with some exceptional cases - one of those cases being Druid, who were fine even before they received a plethora of unique, powerful extra uses for their wildshape.
I think build diversity is great! It's part of the reason I don't like the idea of nerfing some classes - Paladin for example is already widely considered to be pigeonholed into one of two builds - but there's really nothing stopping Druids from just doing everything except an individual player's choice not to press the "bear" button for RP reasons. A Bow druid can also cast and also passably melee, a caster druid can also passably melee, a shifter druid can also powerfully cast. All of them are the best spotter on the server unless the player actively chooses to disregard spot, able to easily catch even geared stealthers at or slightly above their level without needing to find the incredibly rare spot gear.
They're not a weak class. They weren't before they received an outpouring of love through custom feats. 11.5 average damage is not what makes or breaks a Druid, but in my opinion it is part of what pushes them past the point of being reasonable in comparison to everyone else.