I've never been big on conspiracy theories, but 'big fingerboard oil' conspiring to ruin peoples' guitars is now my new favourite — and its less dangerous than the one about a certain election being stolen.
One thing I have noticed since oiling the fingerboard of my JMJ mustang the other day is that apart from the rosewood looking nicer, the minor 'fret-sprout' I could feel over the last few months seems to have gone away.