I'm going to point out that it's only because this is HN and someone here is much more likely to be able to cause PR problems than the average customer. Awesome companies don't harangue people who are already paying them and then make it harder than clicking "unsubscribe" to put a stop to it. I don't think anybody at Cloudflare is terrified that somebody's scorned mistress could wreak her revenge by punching their e-mail into an insecure Unsubscribe box and thus delaying their knowledge of having access to a new beta.
Yeah but you don't ever really see Google or Amazon or Facebook or Netflix or Spotify on here, except employees commenting unofficially. Cloudflare is on here quite frequently and meaningfully. I'd rather companies communicate, even if (and especially when) they fuck up.
It helps that cloudflare isn't too big to fail yet and still trying to get better.