According to [0] between 5 and 10% of all websites use Cloudflare. Even using the lower number, I'm pretty sure that neither 5% of websites are hosted by Comcast nor that they serve 5% of internet users. This gives Cloudflare already a much larger potential to monitor/censor than Comcast has. I am not saying that they actively do so, just pointing out that they do have the scale and market share to do so. What is more, in contrast to said Comcast, they also have the ability to access unencrypted traffic for those 5-10% percent.

[0] https://www.wired.com/story/cloudflare-spectrum-iot-protecti....