

I didn’t describe it correctly. I see people approaching the roundabout with their left signal on, leave it on until they take the 3rd exit. I’ll also see approaching with their eight signal on and take the 1st exit. The intersection used to be a standard perpendicular intersection with traffic lights.
It sounds as if you’re saying to signal left on approach indicating a merge, then signal right to indicate an exit from the circle. I can’t say that I’ve ever seen that in action.
I can’t speak to the quality outlook, but from what I understand about enshittification, it typically requires a self-serving entity like a corporation whose interests are not in alignment with its customers/consumers/userbase. In some of Mr. Doctrow’s writings, he indicates that federating cans be a “circuit breaker” for enshittification.
In a well federated platform, when one node begins to act counter to its users, the users can easily move nodes/instances. This is one of the reasons why there needed to be a law to allow phone number portability. Email is similar, but only if you own your own domain. Look for Cory Doctrow’s writings on BlueSky for more examples.