Fret sprout can happen to any instrument. Especially neglected instruments. I bought an Alembic Epic with an ebony board. It had fret sprout. No big deal. Took it to a tech and had them knocked down. Wonderful bass.
I doubt either of the instruments in the OP left their respective factories with fret sprout.
I doubt either of the instruments in the OP left their respective factories with fret sprout.