As a full time employee I am not paid for hours worked, I am paid for the work performed; for results. As such, it is common and typical for employees like me to be allowed to engage in any number of "non work" activities to help maintain stress and keep productivity up.

That is something that has been true at nearly every company I have worked at. Amazon is not different in that regard, at least not on the teams I was involved with there.

There are a lot of social events at Amazon. I did not spend my work time approaching random people at their desks to mouth off to them. That would be weird and stupid. I simply shared it with people during social conversations at social events where we are encouraged to interact with others.

During social events, I am quite sure that free speech covers what I say.