I block sites when surfing. I found that I couldn't submit an article without enabling google.com for the recaptcha. That's just wrong. Google,and facebook, are the two most intrusive presences on the web. Every hit on anything related to google is a privacy leak.
Roll your own. I remember going to a site where they had pictures of kitties that had to be identified before posting. Surely the people who could build something like voat are capable of building a confirmation application.
The kitty application had a neat feature to thwart machine learning. It would randomly fail when the selections were correct. A human just assumes some kind of error, and solves the new presentation. But a machine gets all screwed up in its algorithms.