Of course everyone can read into it what he wants to read, i wear that button and i am not a poisonous person and i am involved in Fedora since 2005 and in FOSS much longer.
I believe we should abandon these "poisonous" word - it is used much too often to quash arguments.
I totally agree that Personal attacks by some people are totally against our "Be excellent to each other"!
Just calling people "poisonous" - only because they find their feelings represented by a statement on a Button - is also not excellent!
Lets take this button as a kick off to work on solutions - lets begin with better communication!