This way they evoke more emotion, so, more of the unthinking (feeling-based) approval: retweets, reposts, just being remembered. When it's funny, it makes people happier along the way, when it's angry, it may make people also feel anger, but a righteous, just anger.
It's a potent drug which is very hard to stop taking recreationally, and also for a just cause. Not as a poster, but most importantly as a reader.
We're basically going through a mini printing press style communications revolution right now.
Before (say 1999) you had print which was cheap and audiovisual which was expensive/time consuming. Now thanks to tech audiovisual content is something the masses can use to communicate and it's affecting culture greatly.
But 'memes' are things which are pushed onto situation that probably call for more nuance i.e. 80% of the 'Karen' memes I see are not actually 'Karen' memes.
But they don't necessarily communicate 'more' information, and more often than not, they're just used to put an emotive 'playround' spin on something. If the issue is important, words are almost always a better choice.
Irrespective of what happened, a GIF response to something semi-serious I think is bad form. If people aspire to assume responsibility for some important thing ... like processing payments ... then they can assume responsibility for making basic, conscientious communications.
As any writer or poet knows, words are handles to emotions. Choose a slightly different word, and your readers will tend to feel very differently after reading a line containing, otherwise, the same information. It's a wetware equivalent of RPC API.
Memes are this, but taken up to 11. They transmit a much more complex and powerful emotional payload, in readily digestible form.
Like in this case, I could write a whole paragraph listing the kind of emotions that little GIF communicated. Calm distancing, depreciation, disrespect, feeling safe, ... Written out as words, it wouldn't fit in a Tweet, and wouldn't be as powerful a message.
Put another way, if you consider a story to be a collection of handles (in programming sense, like a pointer) to concepts and emotions, then Tamarians communicate by speaking handles to stories. That's one level of indirection extra over this meme, which itself is a (simple) story - a collection of handles to concepts and emotions.
If he was indeed talking about inappropriately skipping the line, then this guy is a bad actor. But I should point out that we don't have any idea - the situation could have been very misrepresented - and he could have done nothing wrong.
But given the public information ... this Tweet is going to come of 'Snitches Get Stitches' in a 'lacking in self awareness' kind of way, as opposed to the 'I was slandered and misrepresented publicly, and that can be very damaging, I'm glad this issue is behind us" kind of way.
Why are adults in the US using Twitter/GIF memes instead of finding thoughtful and mature ways of communicating this stuff? I don't like this evolution.