" suffer from rust "
A combination of things amplified by time...
Clearly some mistakes were made in design...and some attempts made to correct them by the factory... check the Tech Service Bulletins to see those... they include a retro inside front wheel shield, under rear glass fix...etc...
Many people don't read the PM manual and clean out the drains until they already have rust in areas they should not...
Many people have cars where the PO did not find these things either.... and did not fix them...
Most people are not used to having cars with SO MANY drain holes..