Some publications often do this. At least on Reuteres, as well as other news sites, I’ve seen that Twitter/X is now referred to as “X, formerly Twitter”, probably to avoid confusion.

But “the website formerly known as Twitter” is just too lengthy for everyday conversation. I just call it Twitter, everyone knows what it means

How about we just stop mentioning it at all?

Let’s just make it a symbol.

I propose two lines on top of each other on the diagonal.