Because safety is far from a binary equation. Safety is a sliding scale that never reaches 100%. If the Max is 99.9999% safe and regulators are demanding they make it at least 99.99991% safe it doesn't detract from my point.

If other planes received this level of scrutiny, changes would similarly be demanded. The practice of re-badging old models is widespread.

I'm telling you that personally, I'd exclusively travel on just the Max for the rest of my days and wouldn't lose sleep.