But nearly 3000 people died on 9/11. For something to be 15 times worse it would imply that 45,000 people died.
Also this post is not a meme.
I love how people who keep trying to police what qualifies as a meme ultimately expose their own lack of understanding of the concept.
The definition of a meme could be anything at all, but that doesn't seem useful. So I concede that this could be a meme, but it isn't funny and doesn't belong here in my humble opinion.
I'd recommend trying to make some kind of joke with this rather than taking a screenshot of Twitter.
It's not anything at all, it's a pretty clear definition which is is an idea that spreads within a culture and often carries some symbolic meaning. You seem to be confusing memes with jokes.
"Never Forget", at least not until the empire has cynically wrung the last bit of sympathetic credulity from the last oblivious grillman. 9/11s were never intended to appreciate in value; they are printed to be spent.
