Yes, you're over reacting, but I know what you mean about the blenny poop, LOL
If there's not snails in your system or no clean up crew for that matter, you're going to need one.
I have a tremendous turnover rate in my tank and the blenny poop still is seen, it looks like little mouse droppings in the tank when he goes and I HATE it! The snails, especially nassarius will help some in my opinion.