One summary of the overall findings of those articles is something like: there sure are a lot of SARS-like bat coronaviruses in natural reservoirs, and a bunch of them are alarmingly able to spread well in human tissue too, either unmodified or with tiny edits. That doesn't rule out the theory that a lab escape was the source, but it also suggests another SARS-like zoonotic transfer was pretty much a ticking time bomb, and it wouldn't be surprising for it to have happened through that route either.