Western Understanding of Eastern Philosophy

Do people genuinely not get the joke, or is my humor just too dark?

I think it's clever. It's possible that I'm not getting out of it what you intended, however.

I see it as clever because of the contrast. It's taking a picture of people shooting firehoses at other people (which is a very direct action), and comparing it to an Eastern quote which talks about the power of water. Since the Eastern quote probably had something a lot more subtle in mind than just shooting people with firehoses, there's a complete mismatch in concepts, even though it sounds like a superficial fit.

Yes, there's also the title to take into account, lol.

That was my starting point. Then what I wrote above is an approximation of my understanding of what you intended when you put that title on it.