Nonsense. There isn't some super clearly defined line between pro-vaxx and anti-vaxx across the thousands of issues and questions related to covid. Science isn't anti- or pro- anything. Particular beliefs that were labeled "anti-vaxx" were often just not clear or understood yet.

Also, it's not the job of a search engine to be your nanny. What if you are researching conspiracy theories or opposition beliefs, even if you don't believe in them? How would you find them?