Statement by President Biden on the Investigation into the Origins of Covid-19
whitehouse.gov
whitehouse.gov
So that should at least be sufficient reason to discuss the lab leak hypothesis in public without instantly being called a conspiracy theorist.
I know a lot of people find enjoyment in the process, and if being called names for doing so bothers you, I suppose you can take this as absolution. I don't call people "conspiracy theorists"; rather, I simply ignore them because they're not providing anything useful. I don't think you'd like that any better.