10% seems low. I think 1.5-3x is more like it without sacrificing quality. You can easily go 10x if you don’t care about the results too much.
People are also much faster when they dont care about quality at all.
The overall results, if you joined them later was "wow this is slow, you are producing crap and customer is entirely correct when they complain".
My point here is that "don't care about quality" does a lot in that claim. It leads to a lot of useless and contra-productive work - you would be better off if they have done nothing. And I think what people are reproducing that state here, just faster.
it's almost August - companies should have two years of progress since Jan 1 2026.
if you like slop