I like how his name is “President Joe Biden” as if not to be confused with the other Joe Biden. Also this insinuates that he is the president of Threads, or the Fediverse, or even the world maybe?

That’s standard for the potus account. The name changes to who is current and that’s the channel used for presidential statements*. A president still has their own account, not named as president, and is used for personal statements.

• rule not applicable 2016-2020 when a personal account was retconned to be an official channel

Ah I see, understandable. Still it’s presented like he’s the universal/everyone’s president.

I don’t know why you are getting downvoted. He is definitely not my president, I am not from that country!