^^^I worked at valvoline for 3 years back in the day. I will say a lot of people are hard on places like valvoline and jiffy lube because of stuff like that. I am not say some don't have a right to be hard on them, most of it is in the managers hands on how heshe trains the crew. Honestly some stores are pure crap because of a bad manager. I managed at least 3 stores in my time there and did not have one service failure from me or my crew. Even at the good stores there are still going to be bad days. Many of those store do 75-150 cars a day. which doesn't seem that bad for a place set up to do it. However one needs to think about where some cars have there oil filter and keep in mind when many cars get into the shop they have been there in line idling for 10-20 min or just off the freeway. Every one who works there has the scars from 400-700 degree exhaust to prove it. It is not an easy job when things are that hot, any one who doubts it try doing one on my 2 '08 forester, the cats are wrapped around the oil filter 1000 degree cat vs flesh, the flesh will just sizzle.
I was picky in my shops the crew was all trained the same way how tight to put a filter on and drain plug it. The only stripped plugs I seen where from other stores and I would re-tap them to send the customer away with a real plug not some self tapping crap or rubber stopper piece. As for filters being on tight when you do a 100+ cars a day you can get them really tight by hand with out thinking about it after a few months of doing it. There is however no excuse for a loose filter or plug or lack of oil, draining the trans and not the oil. Those shops deserve the bad rep.
Would I take my own car to a so called quick lube shop, HELL NO, unless I know the manager and how he/she trains and who they hire.