Yep. It's an evil business practice.
I think that everyone who hates the change should use AdBlock. Together, we can hopefully put a big enough dent into Google's YouTube income to make them realize that they need to revert the change. Most people have no interest in G+, so there are enough of us to put a huge dent in the income. The only problem is that not enough YouTube creators and viewers view these forums, so we need to somehow make it more public for it to succeed.
Maybe we could make an official boycott thread here. Then all the YouTube creators who come here can make a video linking to the thread. There are also the Google support forums, but the thread would probably just be deleted.
I know one downside to my idea is that YouTube creators would not make even close to as much money, but there's no way to avoid that when making a dent in Google's income.