1. Gain of function research primarily uses samples collected from nature, and seeks to stimulate their evolution in as natural a way as possible to learn how viruses evolve in nature. If such viruses were to escape the lab, they would appear "natural"
2. It's not xenophobic for people from the US to suggest the possibility of a lab leak, because the US was itself funding gain of function research on novel coronaviruses in the Wuhan BSL4 lab
3. Lab leaks happen more often than most people realize[1]
[1]https://www.vox.com/future-perfect/2019/3/20/18260669/deadly...
And in there, I describe exactly how wrong your point 1 is. And how misguided your point 3 is.
The post also won a "best of r/science 2020" award!
You can find it here: https://www.reddit.com/r/science/comments/gk6y95/covid19_did...
At this point, with their market cap and increased moderation, probably less likely than the two I listed.