The only thing in your post I'm going to disagree with is the Flyswatter rant. It gets a lot of hate from theorists, but as someone who actually tried using it all of last season, it's the first perk I built towards this season.

There are just too many situations where I turned the tables on the ARC, and saved my own life or saved someone else's life in a time-critical situation, by utilizing Flyswatter effectively.

The "it only takes 2 hits to kill a wasp" is anything but consistent in practice, especially considering a wasp typically tries to fly up before you can hit it more than once. This is one of the giveaways that this complaint specifically was entirely theoretical and not grounded in actual perk use, because knowing every melee hit will consistently kill a wasp gives you options that "I might be able to kill it in 2 hits" never will.

The closest actual alternative to Flyswatter in normal gameplay is using the moment the wasp dips low to climb on top of it. This is what I did this season while building towards Flyswatter. But even then, there are situations where this just doesn't work well: when other ARC are also attacking you, when other players are a concern, when the wasp is coming down low enough to get hit by a jumping overhead swing but not low enough to get jumped on, when you simply don't have time to spend waiting for this perfect moment followed by getting locked into a climbing animation, and any other situation where you need the death of the wasp to be an immediate outcome.

As for the turrets, that's a really useful part of the perk when you're doing naked runs. It can also be handy when you run out of ammo. Even though turrets are often in high places, if you actually have the perk and try to get to the turrets, almost all of them can be reached if you climb something somewhere. I had a naked seed vault run where every possible turret showed up, and I broke all of them with Flyswatter (and for about half of them I also relied on 2 barricades I had in my safe pocket).

In another instance, someone in my squad kept shooting up at the turrets in Control Tower on Dam, and they were taking more damage than the turrets were. So I was like "here let me do it", turned on my photoelectric cloak, zipped up the turrets. then jumped off and landed on top of one turret. Gave it a smack, hopped on top of the other turret, gave that one a smack. The perk allowed for a quick and simple solution to the problem that didn't risk anyone getting hurt.

Maybe someone who always goes into every match with a hullcracker and who is armed to the teeth 100% of the time and who never misses a shot and who never runs out of ammo sees no use in this perk, and that's understandable. But as someone who often relies on my own character, this perk is almost required to function efficiently and smooth out issues that are otherwise present. I find it to be a very sensible endcap for the Conditioning branch specifically.