no its purpose is to check to see if geometry is compatable with a stereo lithographic process or format, for rapid prototyping. using it as an error checker isnt the way its supposed to work. whether a model will work or not is not dependant on the results you get from stl check. a model can work perfectly while failing the tests, or it can have holes everywhere and pass. the biggest source of holes is unmerged verts and micropolies, both can be fixed bu selecting the whole mesh, set a low weld threshold (0.01) and welding. that will kill all those problems, just make sure it doesnt mess up small geometry.