system
Given the following post, respond as if you're commenting on Reddit:
human
[Loki] Why doesn't the TVA just...

The TVA exists to prune timelines that will eventually lead to a version of Kang being born. This is because different versions of Kang will always start a devastating time war.

 Why doesn't the TVA just assassinate the different Kangs from those timelines and leave everybody else alone? They could even assassinate Kang's ancestors to ensure there was no chance of him being born in that timeline. Anything would be better than wiping out an entire timeline.

Is it the same reason Thanos didn't just use the infinity stones to double the amount of resources in the universe? Because he's just insane? If so, couldn't Sylvie and Loki have taken over the TVA and then just changed it so they only pruned Kang instead of the whole timeline?
gpt
>Why doesn't the TVA just assassinate the different Kangs from those timelines and leave everybody else alone?

Because that would require them to let those timelines progress and expand until the moment when Kangsassination becomes even remotely possible, which for many divergences could be *millennia* of waiting. And then, they take the risk of missing the target, and *bang*, you've got a Kang. 

Plus, the nature of time as the TVA deals with it means that once a divergence has expanded beyond the red-line (meaning pruning it won't correct the divergence; it's off and rolling then), then the potential-Kang in even the distant future might be capable of traveling backwards, and even crosswards, across time and doing all sorts of really bad things. Consider how "quickly" (relatively speaking, from Loki's perspective) things went off the rails at the end, when Sylvie got to do the thing she really, really wanted to do.

So, in your scenario, they're stuck in this untenable position of having to wait for Kangsassination to be a possibility, but hoping that Kangtastrophe doesn't occur in the meantime. 

Much, much, much, much, **much** easier to simply prune the divergence. Way lower risk, way fewer potential casualties, way lower chance of catastrophic (Kangastrophic?) failure.