Jun 23, 2022
That could be true as more data gets released. Since I'm no expert, I prefer to follow the study authors' interpretations of their data, for I believe they know better.
After researching a bit more, it seems that other papers also suggest that, biologically, infections are more likely to result in original antigenic sin compared to vaccines when it comes to Covid.
Here are a few examples:
https://www.medrxiv.org/content/10.1101/2021.09.30.21264363v1