But it is fair and equitable for you to dictate to us what is and is not safe?

You and I stand on the same level. Neither of us have authority here. I have dictated nothing. You, however, continue to fly in the face of the notion of that which is "safe" and "unsafe" derives from a group effort, not a personal vendetta.

But all that is water over the dam at this point, as we are now simply in a situation where no definitive way exists to determine what qualifies according to official rules — because at this point they seem simply to be not rules at all but mod tastes. And since it is the mod who holds the power to ban, that's the only taste that matters.

I will agree that a finer definition on what does and does not constitute NSFW content would be greatly helpful, and it's a shame the mods have not opted to provide for such a reference. The mod, however, seems to consider this unnecessary. With that in mind:

The only way to make oneself safe in such an indeterminate environment is to tag everything. And that's exactly why I'm doing it.

The difficulty is that you have taken the argument to the opposite exteme, which is more disruptive than it is helpful, and the argument of "it's unsafe for someone somewhere", which I can only envision delievered with an artifically sweet grin, is an intentional red herring. If you continue to deny that the primary motivation behind this tagging is protest, even if the protest is for the right reasons, we're simply not going to get anywhere and you will in all likelihood find yourself banned as our superior tires of the drama.

Indeed. And I did consider it, every time. There is also no shame in sticking by one's convictions, as it turns out. There is, however, danger in it.

I've fallen into the trap of letting this discussion be more personal than I should - verily, the same failing I've accused you of. I think we'll find this particular point is a values judgment, but if you'll explain what you gain by sticking to your guns versus conceding that the post might be worthy of an NSFW tag, we may begin to better understand one another.

To that point, there are several points I'm not going to counter because they're valid. In my annoyance I've made ad hominem attacks and soiled my attempt to be the better man.

crying out against percieved tyrany

I would not make this accusation if I didn't distinctly remember reading it, but to your credit, I cannot find the example in question. This hyperbolic post is the best I have found after a cursory search, but I do not submit it as evidence.

Quite the contrary, I've taken the "suggestion" to heart — since anything posted could get someone in trouble, everything must be tagged. Because apparently NSFW has never meant "this is definitely not safe", but rather "someone somewhere could conceivably find this not safe", and I just didn't know it all these decades.

You see, if you want to understand why you're having the accusation "childish" thrown against you so often, this is it. There has been a steadily escalating dispute over the definition of NSFW content. I think everyone would agree the mature way to handle a dispute is with level-headed discussion and compromise. Instead we have been met with overreaction and attention-garnering displays. It's the difference between sitting down in a meeting room to discuss an issue and picketing an establishment to force the issue.

The latter has it's place, but it is not before the former, and I am left to question it's utility. You claim the issue stems from a lack of clarification on the part of the moderator, but if you can show me an exchange - preferably before the issue was publicly addressed in the post stickied at the top of the subreddit - where clarification was asked for or rationally discussed, you would lend some justification to your actions. Meanwhile, there is no denying that this entire ordeal has been disruptive to the subreddit as a whole.