The government isn’t changing its policy on easing restrictions so any surge is on them.
Vaccination isn’t a 100% protection and only just over half of adults are fully vaccinated.
It is a balance of risk but if you leave it to individuals, everyone interprets it differently. Plus the risk you take may have consequences for other people - personal responsibility is the wrong approach here.
That said, we are where we are. I’m not going to be meeting millions of people indoors and will avoid indoor gatherings as much as I can.