If all 4 pads on that axle look that way your fine.
Avoid the dealership! They are horrible places that only retain the mechanics that can't cut it in a real shop.
I bought a brand new work van for my business. At 30k mi while in for warranty work Nissan wanted to do 4 brakes, 4 rotors, 4 tires, and a 4 wheel alignment on a NV3500 work van with a solid rear axle.... Said there was severe wear blah blah blah. Ended up going to over 100k miles and through two sets of tires pulling trailers with that van before actually needing brakes...
This mechanic is after your money. Run, don't walk away from them.
Lol your psychotic. Turn off the news, put down your phone and go touch grass. Jesus.