Isn't irrelevant essentially the same as low in this context? And I tried to clarify that I don't think they're doing anything nefarious either. It's just seems like classic Elon spin, that's all.
No. They're not saying "it won't cost much". They're saying "this is a safety-related issue, so we won't even discuss the cost because obviously safety is our first priority, no matter how much it costs."