-1. Yea, they used them, so what? Did they use them all the time for every mission? No. They used a jet pack the odd time every now and then when they were required to or their mission required them to. They never always had jet packs equipped, nor used them for everything. 501st and Torrent Company are typically a ground force, a fighting force. Yea some of them may have been trained to use a jet pack, but all troopers had been trained to use them at one point. Again, the jet pack was never really apart of their regular equipment. Less than 30 seconds of them using a jet pack doesn't mean they should be able to jet pack spam their way around the ship. It's just not how it works. Torrent Company, rarely used jet packs if even ever. Whilst the likes of 2ndAC, and Wolfpack ALWAYS had to use jet packs as it's either a part of their equipment, role, or job for certain tasks.
I don't see at all why jet packs are "needed" for Torrent Company, because they're not. I still don't see why a couple of seconds to minutes of like 7 troopers using a jet pack means that they all should get one. I mean, I'll even use the battle of Umbara as a key example for this. The 501st landed with LAATs to push the enemies, not one of them used a jet pack, at all to catch their enemies by surprise or go behind enemy lines. They landed and pushed the enemy on F O O T, which included MULTIPLE Torrent Company troopers, that included Tup, Hardcase, Dogma, Kix, Fives and Jesse, 6 of the Torrent Company troopers, that never used jet packs. To add to that, Echo never used a jet pack either, so there really is no need. Just no.
Also again, why compare a few seconds to hours upon hours of footage?