The soft spot is actually more like quicksand
Difficult to disagree. The only thing I would add is you won't find a very light Yamaha BB, which are always going to be around 9lbs +/- but you will find a light precision - sometimes 8lbs or thereabouts. I have tried a few from a BB414 to a BB5000 and, much as I like them, they are just that little bit too heavy for me across the board.
MIJ Precision would be my choice for a lighter weight P bass.