What left me puzzled was why HelpHive didn't simply de-list Conklin with an apology and a statement that it wasn't their intent to harm his business. It seems that this would have been the ethical thing to do, and would have resulted in some good publicity for them.
That's the weird thing. Even if you think the plumber is stone wrong, a bit of business sense should tell you to politely acquiesce and move on.
Instead, they demonize this guy and selectively address his complaints. It seems they really can't grasp they idea that not everyone agrees with their sense of what's good and right. And that makes me think issues of ethics never crossed their minds; it looks as though they cannot imagine themselves as being wrong.