this depends on how manynew calyxes there are.. except for extreme contexts, i don't think it is worth waiting for small % of improved yield. It also has a negative effect on overall quality, imo, too. The plant is on several different developmental timelines under normal circumstances, now with a new wave og growth WAY after the original growth, i'd assume that create more variance in ripeness throughout the buds. This may or may not matter to some, but i want consistency. So, i generalyl do not wait for a new wave of late pistil growth to ripen. Each to their own. Some genetics are their own animal. I think organoman is on to somethign in regard to the cause of your foxtails. This can be some bad genetics too. it can also be due to weak light if not mistaken? Your plants have extreme fertilizer imbalances and symptoms all over the place, which can't help either. You can always snip off foxtails that aren't fully ripe.. make butter, hash or rosin etc from it.
