Your house isn't also accessible by anyone in the world, anywhere, at any time. People who complain about this stuff conveniently ignore that a massive amount of traffic to public websites is malicious and automated in nature. It's not crazy that website operators want to block that stuff. They would rather block the .0001% of people who choose to block javascript than expose their site to the junk. You can rage at Cloudflare all you want but if it wasn't a service people wanted then they wouldn't be offering it.