At the very least it was such an obvious connection that ruling it out should have been an early step; when the PRC clammed up, and stopped letting any data out that should have been seen as the attempt at a cover-up that it likely was.
Maybe it didn't come from the lab. Maybe it didn't come from China at all. But maybe we should have checked that? Maybe we should know if some senior coronavirus researchers at that lab got sick with weird illnesses in the later part of 2019? Maybe we should have confirmed their virus handling procedures were up to snuff, and that a lab leak was unlikely because they were such upstanding and responsible scientists?
Maybe it didn't come from the lab. Maybe it didn't come from China at all. But maybe we should have checked that? Maybe we should know if some senior coronavirus researchers at that lab got sick with weird illnesses in the later part of 2019? Maybe we should have confirmed their virus handling procedures were up to snuff, and that a lab leak was unlikely because they were such upstanding and responsible scientists?