Supposedly the flaw exists on a section where a “false door” exists for future alterations to the exit points. Perhaps not all of their planes were built with this feature. Nothing to inspect in that case.

The number of emergency exits required depends on how many seats you cram on a plane. A Ryanair Max 9 would need that extra exit for compliance.

Do we really know the root cause this quickly?

*Slaps door of 737 MAX* this bad boy can fit so much air in it.