DarkHorse Podcast with Geert Vanden Bossche & Bret Weinstein
This is a long and technical podcast and the first hour is pretty technical, after that it gets a little more general and understandable without an advanced degree in biology.
From 56:00 to 1hr, they talk about the difference between natural antibodies and ones created by the COVID vaccine and the problems that could arise. Mostly the difference between antigen specific antibodies created by the vaccine and natural antibodies that are not antigen specific.
I may have this wrong, but from what I gather he is proposing that if you get the COVID vaccine your body creates an antigen specific antibody against the spike protein. If you contract a variant, these antibodies from the vaccine will bind to the spike protein of the variant but not neutralize it and these vaccine antibodies will out compete your natural antibodies blocking you from developing a natural immunity to the variant.
It is just a theory but the way it is explained in this podcast it sounds reasonable.
https://www.youtube.com/watch?v=BNyAovuUxro