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.