Cloudflare is actively disabling access to some pirate site URLs on its network, informing visitors that the requested pages are unavailable for legal reasons. While these types of ‘HTTP 451’ error messages are relatively rare, they are nothing more than Cloudflare complying with its legal obligations under the DMCA.
Cloudflare is not an ISP and doesn’t haven’t the same relationship to consumers as an ISP. This is quite the stretch.
There are major issues with their market capture and role but it’s a very different problem than net neutrality/ISP’s acting as monopolies.