Yes! They have been extinct ever since CoP came around. We rarely see any great back scratch spins even, since it's not worth a level and people already get overly generous GOE's for easier features.
That's true, but solo scratch spins were already pretty rare at elite levels well before IJS. You won't find a lot in the 1990s and early 2000s.
You did, and sometimes still do, more often see good back scratch spins as the upright position at the end of combination spins.