Did you witness the incident itself? If you didn't I think it is unreasonable for you to judge the TM▸ 's actions.
I think you are right Ollie,
Thanks Tim - personally if I reported everytime someone got heated (as in shouting/swearing etc) I'd probably have to fill a form every day that I am on shift. I luckily haven't been physically assaulted, but it's been threatened. (and this from someone who tries to always be a polite and helpful member of staff

)
As you say, some easily shrug it off, others take it personally.
The way I usually see it, is I wear an
FGW▸ badge, which is peoples cue to have a go - I have had it get to me in the past - but it's sad to say - I'm used to it now.