No, it's not. Vaccinated individuals - even those who catch the virus - have far lower levels of the virus in their bodies, which means fewer chances for mutations.
> CDC Director Rochelle Walensky said recent studies had shown that those vaccinated individuals who do become infected with Covid have just as much viral load as the unvaccinated, making it possible for them to spread the virus to others.
This is why the CDC started recommending masks again.
So the vaccine is for people who want to protect themselves against a serious reaction. Makes the case for vaccination far less compelling than what most people believe.
Seems like that is also up for debate. In this CDC study[1], 74% of cases were in the vaccinated. Probably around 69% of the population were vaccinated, meaning the fact that more than 69% of the cases were in the vaccinated suggests that the vaccinated were even more susceptible than the unvaccinated. I'm sure there are plenty of considerations with this study, but it certainly isn't glaringly obvious that vaccination reduces susceptibility.
The new data for the delta variant shows reduced protection for unvaccinated people (e.g. public benefit) from being around vaccinated people, but still shows benefit to vaccinated people.
What about it? To attempt to restate it: due to the emergence of the delta mutation, it is becoming less reliable to rely on the shared benefit of others being vaccinated to protect unvaccinated or immunocompromised individuals. So the risks to all populations is increasing, but not proportionally: the speed of spread to those without the personal benefit of being vaccinated is increasing much faster.
Edit: note, I’ve seen your other link, and do wonder why that was observed for that community. Here I am referring to current CDC estimates for the country and reports of hospital utilization averages overall.
