What else do they have to do?
Vaccination has been the answer all along. You may still get symptomatic COVID but the likelihood of it putting you in the hospital, or worse, is greatly diminished.
The biggest issues in developed countries who have been able to vaccinate everyone willing to get vaccinated are:
1) People choosing not to get vaccinated 2) Children, who either can't get vaccinated, or parents are unsure if it's a good idea
#1 seems simple -- lockdown post-vaccine was pretty much a non-starter most places and there isn't much evidence with this Delta variant that this was a wrong decision. Those at-risk who can't get vaccinated need to isolate. Those who can get vaccinated and choose not to are accepting the risk. With the vaccine still protecting at 90%+, I don't even see the anti-vax folks causing much external effect outside of their population.
#2 is trickier. Vaccinating children feels much riskier to me and I've not decided if my own kids should get the shots or not. Given that COVID has shown to be minimally impactful for children compared to adults as well as compared to other viruses children commonly get, it seems mostly unnecessary. However, if Delta proves to be more dangerous for kids, those who feel vaccines are fine for adults but are doubtful for kids, will really need to rethink things.