Still possible - but far less likely. Be cautious how to interpret these things, easy to be misled by someone with an agenda. Like any vaccine, it doesn't completely stop you from becoming infected, but it reduces the risk and massively reduces the severity. Look at new covid cases (uk) vs death rate - you can clearly see the vaccines work in both severity and spread (bearing in mind that we had "Freedom Day" back in July (?)).
Get vaccinated (my opinion), there's no other way out of this.