just a matter of how you weight the benefit of slightly more mass -- those white pistils are probably newer growth -- a last ditch effort to get knocked up, biologically speaking.
i figure if it's a few percent more mass, i'd rather harvest when i prefer than wait... but, your mileage may vary.. each to their own on this. A large operation may look at it differetly but if yield is a couple pounds, it only adds up to a few grams more, but a week or two of time... not worth it, imo. looks like a bit of spiraling in the one photo... could just be a little intense light on tip of colas causing some pistils to shoot out. i definitely don't wait for spirals/foxtailing for same reasons... even snip it off for hash/rosin bin.