Those claims that it was maintenance is a bit bizarre considering these were brand new craft, and that panel isn't exactly a wear item. (ofc, some wear with each pressurization cycle, but I digress)
It'd be different if it was an engine issue on a 20+ year old plane.
But still, this isn't anything like the prior MAX issue - and frankly could have just as easily happened to any manufacturer like Airbus.
I don't think it's worth bashing Boeing much about, I doubt they're too happy about it either.