This may be another untested personal anecdote. I hand-sand just the two
tearout spots (interior & exterior, wet or dry) while the bowl is still
pretty rough. I use soft wax lubricated 100 grit paper. Then I continue
finish cutting that's deeper than the two smoothed areas. Seems to
reduce endgrain tearout spots in a cross grain piece, I don't know why.
Arch

Fortiter,