It doesn't seem like you're reading the blog post. Things that the blog post says:
1. Pooling DOES lead to slightly higher uptime on Ashamane's Bite. But it's only very small. This is because:
2. Specifically TRYING to pool does NOT always lead to you in fact having more energy available after your Rips. In other words, in many many situations you will end up having pooled despite not trying to pool. I can't emphasize that enough.
In many situations you will end up having a pool of energy to use after Rip despite not consciously trying to make that happen.
This could be just rotational timings lining up that way (ie you just have to wait for rip to get into pandemic range anyway) or it could be due to an item you have, or because your cooldowns are up and running. In other words, the strategy of consciously pooling only occasionally leads to you having more energy to spam CD builders after applying a Rip than you otherwise would've had.
So, since the feral rotation naturally pools energy around Rip anyway, consciously ALWAYS pooling energy even when the rotation doesn't naturally pool energy doesn't make much difference to overall output.
The upshot is that since Ashamane's Bite is such a relatively small chunk of your damage and because deliberately pooling only sometimes actually leads to a difference in ability usage right after a rip, you don't buy measurably more dps by making sure to always pool as opposed to following the natural flow of the rotation. In fact, whether you use Simcraft (as Swol does in his blog post) or the AMR simulator, pooling or not around Rip doesn't measurably improve your output.
Again, to repeat, Swol's results follow from using Simcraft. They are not specific to AMR. It is not promoting AMR. It is just deep theorycraft. The main, very interesting to me anyway, result of the theorycraft is that the Feral rotation naturally pools energy around Rip. The result is not: DON'T POOL! The main result is that, in fact, unless you're poorly overwriting your rips because you're failing to refresh in the pandemic window, you end up pooling basically all the time anyway.