Have you read an article or have evidence we are there yet? Because I haven’t, other then a warning from a company hoping to sell more product. Believe me if/when that happens it will be all over the news but so far there has not been a large amount of reinfections/vaccinated people getting sick. So stop insisting the end times are here. What you are describing is a worst case scenario.Ahhh, you’re ever the optimist. But no, it doesn’t work like that. There was a window, where aggressive action was necessary. We may have already missed the window. If not, it’s quickly closing.
Immunity wanes over time. People who were infected by the Wuhan strain in March 2020 likely do not have much immunity to the Delta strain in July 2021. Vaccines provide stronger immunity but it also wanes over time ( Pfizer points to studies showing the need for a booster. FDA/CDC correctly say not necessary YET. But it likely will become beneficial). And as long as there is mass circulation of the disease - more variants pop up, with variants that become more and more resistant to the existing vaccines.
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The immune system is funny in how it works, but it definitely will bump up production of antibodies/t cells if you get exposed again, and provided those stay above a certain level you won’t get sick. Covid was widely circulating less then 4 months ago, meaning lots of people got reexposed.
As always when it comes to the future no one knows nothing. For now the vaccines remain protective. We also don’t know if last weeks increase was holiday related. If things really start to change I’ll change my tune but for now the sky is not falling.