A diminishing fraction, because "hesitant" is rapidly becoming indistinguishable from "never".
Whatever they were waiting for, it has either come or will never come. For a while they claimed to be waiting on non-emergency approval, and that happened months ago. More and more data comes in; it's not like they're waiting for LHC-style five-sigmas.
Eventually, people say, "You're not 'hesitant', you're anti-vax, and you get treated as anti-vax". They can't hang on to a permanent "Well, I'm still thinking about saving my own life, but since you were mean to me I won't."
how many simply "hesitant" just double-down in contrarianism to that sub-reddit of assholes?