Just curious, why do you mention you work at AWS if you're just disclaiming that fact in the next sentence? Besides, nothing you stated is specific to AWS or any of its products.
This is designed to reduce the chances of eager employees going out and astro-turfing or otherwise acting in trust-damaging ways while thinking they're "helping".
When this is the case it’s often nice to state this conflict of interest, so others can take your appraisal in the appropriate context.
I’m not implying anything about the post, just stating what I assume to be the reason for the disclosure.