It's not unattractive. I'd pay money for a small rock of it if it would stay there. Any collector of macros wouldn't be offended by it in the dedicated system as well
Urchins, parrotfish, turtles, reef raspers need plants with this adaptation/pervasive growth ability. In the large scheme it all balances well for sure. There are also tons of threads of it staying controlled, but by and large that's too risky and universal controls are warranted. it's such a rascal of a plant