I mean, technically the "data" is that any time someone is around another person, there is risk for transmission. And that risk goes up exponentially in relation to the number of people. How much give a fuck one has and what they decide to do with regard to that data is up to them...risk/reward and shit. But to act like "there's no proof traveling could help spread it" is just burying your head.
That said, personally, we haven't traveled since February. But, we just bought our second boat since March to offset it too, so that helps a ton. I chose to do what I can, within my means, within what I feel is reasonable, to help mitigate things. But everyone has different definitions of what they think is reasonable and everyone has different means and I don't think it's for me to judge them on that. My choice to get a boat isn't 100% safe, the times I have gone out to dinner on a patio isn't 100% safe, etc. But it's what I have decided is reasonable for our personal threshold. To each their own.