There're plenty of other explanations. Not all failures are linked to deploys. The root cause could turn out to be a hardware failure somewhere. It could be a b

There're plenty of other explanations. Not all failures are linked to deploys. The root cause could turn out to be a hardware failure somewhere. It could be a botched rollback of a change earlier in the week that had lesser consequences. It could be a change that was scheduled to take place on the 1st of the month, where the person who chose the live-date didn't think about the day of the week. Or it could be, as you describe it, someone without any sense.