With a traditional virus your immune system's adaptive immunity learns how the virus proteins are structured so it can recognize it (and similar strains) in the future. With the mRNA vaccines your immune system never learns to recognize the virus, which is why people with Covid are having far fewer problems with the Delta variant compared to those who just received the mRNA vaccines.
It learns to recognize the spike protein and produces memory cells for them, but the spike is the most quickly mutating part of the virus. People with natural immunity will have memory cells and antibodies for all parts of the virus. I don't know if there's a legitimate reason they made the vaccines only produce the spikes but it sure does look like planned obsolescence from the outside.
With a traditional virus your immune system's adaptive immunity learns how the virus proteins are structured so it can recognize it (and similar strains) in the future. With the mRNA vaccines your immune system never learns to recognize the virus, which is why people with Covid are having far fewer problems with the Delta variant compared to those who just received the mRNA vaccines.
It learns to recognize the spike protein and produces memory cells for them, but the spike is the most quickly mutating part of the virus. People with natural immunity will have memory cells and antibodies for all parts of the virus. I don't know if there's a legitimate reason they made the vaccines only produce the spikes but it sure does look like planned obsolescence from the outside.