First off the tablet claims answerbank closed the connection, then when I get back it's slung all the typing away. (Then I am in a 10 minute conversation.) Arrrhhh !!!!!
Free speech can cover anything. Society decides what isn't free after all.
Anyone can have an opinion but one needs to select where to express it, as there may be consequences.
Sainsbury's couldn't be seen to be allowing staff denigrating valued customers, especially on the Internet.
C'est la vie.