The concern is that scammers can create fake phishy versions of sites that end in "__x.com" as ___twitter.com to trick Twitter users into divulging passwords or other sensitive info. Because to the Twitter user it'll look like the genuine site that ends with __x.com on the Twitter app but it won't actually be.
Some examples of sites already made to prevent scammers from using them are:
Netflitwitter, Ametwitter, Fedetwitter, and Roblotwitter, dot com, which falsely showed as Netflix, Amex, FedEx, and Roblox, dot com.
Though I think they (xitter programmers) already manually added exceptions for the examples that trended which stopped that from happening, for those specific examples.
Sometimes I wonder if the general populace is, whether by nature, material conditions, or education, too stupid for nuanced satire. Hell, not even actual nuance, but just anything not literally explaining the true intended message somewhere in the story.
I mean look what happened after Fight Club was adapted into a movie like two decades ago. Did people realize how alienated late capitalism is making us? Did they try to form new ways for men to connect with each other that broke the confines of toxic masculinity? Not in any appreciable way. What they did start doing is meeting up to beat the shit out of each other.