Looks like it has just started in the past year or so.
Mine looked like that... back in 2005...
Spend a long, nasty day (or weekend) ... grind/cut out old crap.
Weld in new stuff... and coat the hell out of both sides.
Depending on year, later years had a nice fender liner that went in the backs
to protect them. My 98's did not have these. SO if yours don't have,
get em.
My brother in law did his few years ago. Strut busted through. Took him a
day to do.