You are correct:10,000 miles is ridiculously low, that was off the top of my head and wrong. I should have said the SW 1380 plane had 10,000 flights logged since its last engine overhaul before the accident[1] - the article doesn't say how long the intervals are (but they are >10,000 flights).

1. https://arstechnica.com/information-technology/2018/04/how-a...