I argue: it's not. It's polishing. It's functionally a bit time-wast-y compared to reductions in the cost, and price of ebikes.
I tell you what I'd like as a bike rider: I'd like the post evergiven/covid supply chain behind my brake fluid fixed. It's insanely expensive to replace brakes and gears and wheels on a street bike these days: I ride a Movida 200 which is a pretty average, low end disc-brake unit with fluid breaklines, and I am up for a horrendous cost in parts to replace: the labour I can understand, this isn't a zero-work job. But the supply chain fragility in bicycles is truly scary: I paid twice the base cost of my (admitedly secondhand) bike, repairing it these last 2 years.
I know: I should learn to do this myself. I did once long ago last century take apart a sturmy-archer 3 speed hub gear, and remake it, and I did have no left over parts. Amazing. Some of the springs were like fairy-floss. Now, I have old person shakey hands and to be frank I'd rather pay a hipster to do it for me, but the parts cost is just obscene. I'm not paying his tattoo costs, this is some anonymous bike part warehouse in the cloud, which is ripping us all off worldwide.