All this study has shown is that lots of very specific antibodies are produced via vaccination. We already know those antibodies aren't very robust (targeting j

All this study has shown is that lots of very specific antibodies are produced via vaccination. We already know those antibodies aren't very robust (targeting just a few epitopes on the spike protein). Naturally produced antibodies, however, are robust and target epitopes across multiple proteins including the spike protein. Additionally, this study isn't looking at any other aspect of our immune system, only antibody levels. We already know antibodies aren't the end-all-be-all of immunity.