This directly contradicts what immunologists seem to be finding as in the "Antibodies elicited by mRNA-1273 vaccination bind more broadly to the receptor binding domain than do those from SARS-CoV-2 infection" [1] study.
Summarized by the director of the NIH [2]:
> antibodies elicited by the mRNA vaccine were more focused to the RBD compared to antibodies elicited by an infection, which more often targeted other portions of the spike protein. Importantly, the vaccine-elicited antibodies targeted a broader range of places on the RBD than those elicited by natural infection.
If there's one thing we should learn from this pandemic it seems like the complexity and non-intuitiveness of the immune system is amongst them.
1: https://pubmed.ncbi.nlm.nih.gov/34103407/
2: https://directorsblog.nih.gov/2021/06/22/how-immunity-genera...