None of their explanation makes them free from liability. This is the danger with aftermarket manufacturers, there is no real risk management or engineering done, just fab work and seat of the pants testing. They get away with that because there isn't a regulating body that forces them to comply to any standard. However, if someone has an accident due to this, any lawyer will be able to clean the floor with BMR all up and down the court room. I would love to see an engineer in my industry try to feed an FDA auditor some bs like "it doesn't matter that we did wrong, we sold a ton of these and this is the first failure..." Cue business shut down and company executives in federal prison