Lunar Libration

You say 'wobble' but it's really only an apparent wobble. The Moon is not actually wobbling.

The 3 bullet points you have go into detail about this. It might be further pointed out that if the Moon's orbit was circular there would be no libration in longitude. The difference between a circular orbit and an elliptical orbit is the cause of this libration, since the Moon's angular rotation rate is fixed but it's rotation speed around the Earth varies as the Moon moves between perigee and apogee. This is the more challenging libration to understand. The other two types are fairly obvious.

Cool video, btw, Good find.

That's a good point. It is just a wobble from our perspective, the moon itself is just orbiting.

Since the moon's rotation is locked with it's revolution around the earth, the earth stays pretty much in the same place in the lunar sky. However, due to libration, it does move around within a few degrees...

Source:

Earth In Lunar Sky

spaceweathergallery.com730 × 730Search by imageEarth In Lunar Sky Taken by Peter Zimnikoval on March 30, 2015 @ Banska Bystrica, Slovakia

"Since the moon's rotation is locked with it's revolution around the earth, the earth stays pretty much in the same place in the lunar sky".

I would have to disagree with that statement.

Due to the relative masses of both bodies the barycentre of both moon and earth is some 4500km or about 2/3rds of the earth's radius from the centre of the earth, and so the earth and moon actually orbit each other.

It could be argued that part of the visible effect of libration is due to this mutual orbiting which causes an observer on earth to see a circulating view of the moon's surface as the two orbit each other. The view moves both longitudinally and laterally due to the moon's orbital inclination to the ecliptic and is also reinforced to a lesser degree by the gradual movement of the perigee and apogee (line of apsides) around the orbital plane about once every 9 years .

Is there something in your statements that shows Rixter's statement to be incorrect? You are mostly talking about an obsever on Earth, While Rixter is talking about an observer at some point on the near side of the moon, observing the apparent position of the Earth over time. I believe he is correct.