Well, I'm not sure whether you're being ironic or serious, so I'll guess serious first...
I'm no fan of homeowner's associations, and live out in a rural area where there aren't any. I don't want anybody telling me I have to mow my lawn to a certain height. I mow it, but only when I feel like it. Some of my neighbors have rickety buildings and dead cars on blocks and so forth, that would curl your hair. Over-long lawns don't even get a sideways glance out here.
I'd never take it upon myself to modify a neighbor's property by stealth or destruction. That's just not right. Bad enough when the associations do it by regulation, but if you choose to live in a regulated area, that's the price.
I can't wait until this guy's association writes in a bylaw regulating "Lawn Speech".
I was being both serious and tongue-in-cheek at the same time. If they don't like the "lawn language" or the high grass, the only alternative is complete regulation by some city or local authority. Here, in Ft. Walton Beach, we call them (among other things) Lawn Nazis...........