Those all appear to be shoots from last spring. We would normally remove them just before summer solstice (100 days before frost??) to get smaller second shoots. Sometimes shoots are allowed to grow long for a year or 2 to increase trunk thickness.
JBP can be pruned any time of year but results vary depending on timing. Pines only bud reliably from healthy needles so don't cut way back to bare wood.
Late summer prune doesn't kill the tree but new shoots often don't open until the following spring. Spring growth will usually be strong.
Winter prune will produce new buds in spring. Growth will be strong. May be followed up with summer decandling to get smaller shoots if growth is strong.
Spring prune produces medium strong new shoots quickly after pruning.
Early summer prune produces lots of shorter new shoots.