username does not use appropriate username tied to token

[yshaban-godaddy]

I setup a bot integration and a token and used it with pyslack in my python code. It is appropriately sending out the error messages to my channel, however, my bot is not using the icon that I associated with in its integration.

After further testing I have found out that I can arbitrarily set the username to anything, and it does not use the username that is associated with the token I created. This does not seem safe or correct. Shouldn't it only be using the associated username/info that is tied to a given token?