If that's true, there's no reason to think that we understand 100% of the long term effects of the novel vaccines for this bug.
When it costs us virtually nothing to do the right thing, though, I don't see how the precautionary principle applies. Usually we see that principle come up in arguments over nuclear power, large-scale environmental projects, major technological paradigm shifts, or medical therapies with a real potential for harm. It just doesn't seem to be in play here. Wear a mask in public, exercise reasonable social distancing practices when possible, and get vaccinated with something that has already been used successfully over a billion times. Is that really asking so much?
OK, understood. It's good to see where people are coming from on this subject, even when disagreeing.
Allowing the virus to propagate freely is asking for trouble in the form of mutations as well. If it had been possible to inoculate the majority of the population in India, for example, we probably wouldn't be dealing with the delta variant right now.
Edit: if a single assertion above is wrong, please reply with citations, and we'll all be that much better-informed for it. Downvoting something that's objectively correct just because it disagrees with your political agenda is the weakest of weak sauce.