[chuck_the_tv_out]

“named Theia”

who came up with that?

“4.5 billion years ago — and that it collided with Earth to form the moon”

rubbish. that wouldn’t account for the rotation.

[Vaquero]

ah, Dr. Chuck, the planetary scientist.

[messierhunter]

rubbish. that wouldn’t account for the rotation.
Why not? Tidal lock is inevitable. This is true of most larger moons in the solar system, regardless of formation.