same here dude. all oil changes for all 3 of my cars done by me. I know everything is done 100% and if something screws up then its only me. this includes other jobs. if I have the tools/time/ability I will tack the the job. anything in depth not. unless I grow a pair. haha.Am feeling for the owner. ? Hope he soon gets restitution to his full satisfaction.
Things happen to all of us including accidents that are faultless.
To reduce that chance that "an Act of God" would occur, I would feel 100x's better if I was the direct cause rather than some third party.
Have been doing my own maintenance on all my vehicles for the past 4 decades. Only me to blame if anything ever went wrong.