"A lot of small things adding up" is also how conspiracy theories are formed and sustained. Be it Qanon, GME, Pizzagate, 9/11-was-an-inside-job, etc. They all rely on small details that are not individually damning, but in aggregate fit a compelling narrative. You have to be extremely wary of this sort of thinking.

I don't think that a lab leak is implausible, but your statement that the small pointers "cease being coincidences" because they fit a narrative imparts far, far too much certainty to the lab leak theory.