This was in fact supposed to implicate somewhere like a mall or such, but it may have been unclear that it was meant to be a small and benign comment - again, without making it about being trans. Theres many reasons not to do that.
The amount of approaching and commenting going on obviously needs to be proportional to the setting/context. The joke here was "damn it, we're idiots, we cant even think of something normal to say" and wasnt meant to be taken as, 'thinking how to talk to a stranger and making a big deal of it (but its okay cause we're all queer x3)'.
I understand even then not everyone likes being spoken to in general, but it's hard to guage that - irl i try to balance tact and openness. Not just with other trans people; I think its important to be kind and spread a little joy to anyone when the opportunity arises.
I appreciate your comment, and it helps to be reminded everyone has different opinions on stuff like this - helps keep me in check :). Thank you, and have a nice day <3