I've more critical of Boeing than some folks here in the past, but if your goal is safety, you're just limiting your own options by rejecting planes with provably good safety records. (Or if you somehow think that's warranted, then there seem to be plenty of reasons to question Airbus's integrity too.) OTOH, if your goal is to just do this as some kind of economic retaliation (a "vote with your wallet" thing), in which case, never mind, I misunderstood your goal as being safety-related. Though you're not the person who wrote the initial comment, so I guess your reason could be different.