"We wuzzery" is the short form of "we wuz kangz," which is black people claiming that they were the ancestors of anyone that's ever done anything in history, such as Egyptians, Mozart, Israelites, the entire island of Briton, etc.
Lately I've noticed some right wingers on X trend into the wuzzery as well. For example, the claim that ancient Chinese emperors were white has been doing the rounds for at least a few months. This is based on remains called the Tarim mummies that were excavated in Xinjiang and exhibit red hair. So it seems there is some basis to this... until you look at a map and see that Xinjiang borders Kyrgyzstan in the northwest and wasn't even really part of China until recently. So we're talking about white mummies found near the Caucasus. Earthshattering.
The other claim, and probably weirder, is that Jesus was a white European. I understand the motivation behind it - Christian heritage is a significant factor in today's right wing, but due to present views of Jewish culture the idea that Jesus was ethnically Jewish sticks in people's craws. Also, this countersignals the infamous kangz idea that Jesus was black.
Unfortunately there is no evidence that Jesus was white in the European sense and the Biblical record in Matthew and Luke clearly states via genealogy that He was born to the tribe of Judah. ("Jew" means member of Judah.) Revelations also calls Jesus the "Lion of the Tribe of Judah." In terms of appearance, that would be something like the modern Lebanese.
I guess the lesson here is that even anonymous discourse can tilt away from the facts when under cultural and political pressures.
There is a recessive gene in some Central and North Asian groups that produces red hair more commonly. You'll see it occasionally in Mongolia, Kazakhstan and some of the other northern Stan countries, as well as Xinjiang. Especially small villages or nomadic populations where the gene pool is smaller. There's been some speculation that Genghis Khan and some of his children may have had red or auburn hair.
It's not speculation, it's literally in all of the Mongolian depictions / history that he had red hair. The speculation is that he was of more proto-European ancestry (Russian / Scythian / Yamnaya) rather than what we'd see as a modern Mongolian (heavily mixed with Chinese).