I took a look up on the MAS (Dorman) website - sure looks like the same parts I installed on the '00 Camry back in '15. IIRC they didn't look like cheap / or "bad" parts at the time: I'd seen worse in my days. Certainly didn't look any thinner vs. the lateral arms removed at the time, if anything they looked as good quality / or better vs. the ripped, beat ones that were on there.
The Dorman lateral arms currently installed I'm sure would have lasted a bit longer: I've been 'battling' various suspension, and drive-line parts degrading over the past few years, on both the front and rear suspension. The recent (9/18) Monroe quick-strut replacement @ all 4 corners hasn't helped any of the 'older' components that were in-place, at time of replacement.
Most recent issue is the Trailing arm bushings in the rear spindle(s) has degraded, the bushing in the right (pass.) rear spindle is pretty shot at this point. Whether this was 'helped' along by work done for the rear strut replacements, can't say - I had enlisted the help of a local trusted shop to do the work, at the time. ... At this point, it really doesn't matter - as far as I can tell, the trailing arms / bushings are original to the vehicle .. 275,000 miles later.
I need to finish sourcing-out bolts, etc. to do a complete rear suspension refresh, like @tedmich
did for his daughter's Camry recently. I'm going to call down / stop by the local Bond or Advance Auto parts stores to take a look at the Moog offerings, if they have stock in this week.