Sorry but that is untrue, antibodies wane after a short period of time, the immune system remembers viruses via T cells, once infected and recovered, you are immune.
If this isn't the case what is the point of vaccination.
Vaccines produce herd immunity, that is how they work.
There are enough scientists out there, epidemiology experts and nobel prize winners that are trying to get governments to go herd immunity but we are listening to government advisors that have interests in pharmaceutical companies manufacturing vaccines.
Sweden went down the herd immunity route and they seem to be doing OK.