In the last couple years, I guess I've handled and shot maybe a dozen newer Expresses and brand new WMs.
I recall one with some light rust, a few minutes conversation with the idiot owner showed me the problem could not be laid rightfully at Big Green's corporate feet.
One of the real problems with the Age of Information is the lack of Bozo Filters.
Any clown can post an opinion, and oh so many do exactly that.
Real world info shows no more rusted up Expresses than rusty ol' Benellis. Maybe less.
Ammo issues, in the world where the bottom line rules, are more common that in days of yore.
One of the reasons I urge folks to drop the mouse and hit the range is that only shooting Shell A in Shotgun B will determine if the combination cycles at the launch point and hits at the terminus.
Number Six eats anything in 2 3/4" but Gun Clubs with its usual LC barrel. With the original 1955 barrel, the problem lessens but does not vanish.
Stick either barrel ( With 4 12 gauge 870s here there's some serious Mix/Matching at times) on Frankenstein, the glitch goes away 95%.
Reloading those GC empties sees the problem worse in either gun and barrel. That steelbase must not be right on spec to size down to same well.
I have seen Expresses with non concentric boring, choke threading and one crooked mag tube.
All went bang on command and made their owners happy.
The Net huhu about serious rusting probs should be taken with a grain of NaCl.