I worked for many years in a lab, the accidental leak hypothesis was and still is what I consider the most probable. Calculate the joint probability of everything we know about the origin of SARS-CoV-2 happening and it should be obvious that the "lab leak" should be _thoroughly_ investigated before dismissing it.
We’ve never, despite years and years of trying, been able to identify an origin for Ebola. The basic reality is we don’t know anywhere near all the diseases that animals have.
China put sanctions on Australia that will and have cost their economy billions for implying that the lab leak hypothesis is plausible. Reasonable or not the Chinese government believes suppressing this theory to be a major policy goal. So I expect they’ve either spent orders of magnitude more effort than we ever spent on looking for Ebola’s origins, or they have some reason to believe they wouldn’t find anything.
This isn’t a smoking gun, but it is a dog that didn’t bark.