I was hoping someone would maybe add to this. I have a Yamaha Pacifica, so I don't know if that's counted as having ultra cheap frets. I'm guessing they're just average.
So by not stupidly fast, I can probably get away with using ss strings for many years without needing to worry?
I'm thinking nobody has added because not a lot of people use SS strings.
I've played for over 45 years and never use SS strings on electric or acoustic.
Nickel or nickel plated on electrics and bronze on acoustics.
Fret wear is more about technique. If you play close to the fret your frets will last
a very long time.
If you play away from the frets you will wear your frets out faster.
Same when using a capo. If you put the capo in the middle between the frets it
will wear out the frets very quickly.
Same when doing bends. Do your bends right next to the fret will notonky sound better
but prolong the life of your frets.
Sorry can't answer the question on how fast SS string will cause fret wear.