i put a solenoid on a delco steel nose starter a week ago (clark) lol but it was a relatively new starter that they hit with a hammer and cracked the plastic end cap and the B+ post was loose, my old employer had "fixed" the starter 3 times by replacing it in as many years, turned out it was a bad wire to the S terminal
a throw away society produces parts changers rather than troubleshooters

but
a lot of times when you figure the labor into the rebuild you can save the customer money by replacing an entire starter

same reason i dont rebuild JB2s anymore, it dont save any money and it dont come with a warranty for quality of workmanship lol

i dont think its so much a case of a "throw away society" but more of the average mechanic not being the jack of all trades he was a few decades ago

i can rebuild a starter, i worked in auto electric previous to me being in forklifts (and i rebuilt diesel injection pumps too), but at the end of the day its cheaper for him and i can get more done in a day by just replacing it

its been about 2 months since the last post b4 this 1
a lot has changed since
im sure we all noticed the shifting away from just throwing stuff away lately