Knitting looms often aren't any faster than needle knitting. They do have the advantage of preventing dropped stitches, so that may be an advantage when using ruffling yarn.
It is tough to locate mistakes in eyelash or ruffling yarn! In a way that is good, because if you make a mistake and miss it, it is not easily noticed in a finished piece. If you want to make the work perfect anyway, well, paying really close attention all the time is key.