PubSub hidden functionality not available to devs?

I understand this much. I only pointed that particular topic out because the functionality exists and can easily give us a dev topic for such functionality. I’m more wondering why they seem to be favoring Webhooks over the pubsub, they obviously have functionality to live feed follows, hosts, raids etc (not really concerned about raids since you can get that from irc) but are choosing to go the route of webhooks. Webhooks are arguably more expensive for the developer than pubsub and i would think more developers could utilize pubsub.