[arghnoname]

I think water sanitation is vital, good, etc

If every show I watched had ham-fisted dialogue about how great water sanitation is, how we should all happily pay more taxes to support it, how flushing chemicals down the toilet is evil, etc, I'd turn the channel off.

Even if you agree with the message, being preached to can be off-putting. If you disagree with the message and people like you are framed as cartoonish villains, it's a different matter entirely.