You can catch something twice in the same season of your immunity last only a couple months (something we do not know about covid)
And thats still not herd immunity (temp immunity is better). So no. And unless you're an epidemiologist I really don't think what you have to say means jack squat, in the realm of what's going on. See you're interpreting data you have no actual understanding of how to interpret. It's as bad as me trying to tell my mechanic how to fix my car (or my doctor what disease I have), I don't have the background to make those assumptions.
A degree of herd immunity does result from the natural course of every pandemic, epidemic, or just a normal year of flu. It is the inevitable course of the history of the pandemic. I believe the infection will gradually taper off as it has happened in all past pandemics, epidemics and normal courses of virus infections.
The question remains as to what happens next. Since this COVID-19 is new wiht unknowns it could just fade away like it's cousin the 2003 SARS, or return again like the flu.
There is also an apparent relationship of the decreasing number of fatalities even though there is a second bell curve in June, which I predicted simply based on the fact that all large countries have shown this second hump infections in their natural relationship with the infection.
Edit: Also afaik decreasing could also be due to the fact that people are wearing their masks in new york and social distancing still, unlike places like Texas and Florida and Arizona where cases are still surging, and economies are reopening.
The bell curve and subsequent decrease is the natural course of the relationship between the virus and the host population it is the same in all the different countries and regions large enough population to show the natural history of the infection curve. This has been the observed relationship of all the pandemics adn epidemics in the past for zoonotic viruses like the flues, and happens regardless of the measures to reduce the impact of the virus.
There is a problem with COVID-19 that is that is those that recover from COVID-19 have more health complications, and some debilitating and life threatening not as apparent with flu infections.