"Why is this guy saying all these obvious things as if they were important?"
Because he was literally the first one.
Had the Beatles never done anything after their first album, it would still be 'good' for its time, but it was their ability to improve each record that gave them such an edge over everyone else.
My thesis is that when every piece of music has a clever gimmick, nothing sounds unique.
[1]https://tvtropes.org/pmwiki/pmwiki.php/Main/SeinfeldIsUnfunn...
Sounds like many other terrible recordings from early 60s- terrible mix, terrible background noise, instruments can't be heard distinctly.
Contrast Take Five, recorded live several years before. It's got some background noise but it's still so clear you can hear the creaking of the bass during the drum solo.
Any track on Pet Sounds. Recorded only a few years later, and under heavy influence by Spector, it sounds so much dramatically better.
Can anybody point out a better recorded example of Spector's wall of sound?
"River Deep - Mountain High" is probably the pinnacle of the wall of sound that Spector did. (https://www.youtube.com/watch?v=e9Lehkou2Do) That said, you aren't going to get the clarity you're accustomed to because of the layers and layers of sound required and the fact that up until the mid 60s you were dealing with only 2-3 track recording. The Beatles didn't get access to 8 tracks until late 1968 (Sgt. Peppers was done with two 4 track machines), and 16 tracks weren't common until the early 70s. Wilson did Pet Sounds by initially recording the backing tracks on a 4 track, piping that mono mix into track one of the new 8 track console Columbia had installed, and then using the remaining channels for vocals (one channel for each member) and sweetening. I'd say the best quality recording of Spector's wall of sound is "Let it Down". (https://www.youtube.com/watch?v=5Gyk_gvuIoI)
That said, if you've listened to Pet Sounds and "Wouldn't it be nice" then you've heard the wall of sound.
I went and listened to River Deep- same problem. Just too much sound and poor mixing. Now I'm listening to Let It Down- definitely much cleaner-sounding (less warble and garble).
When it comes to multitrack recordings from the 1960s I still think the best is https://en.wikipedia.org/wiki/1983..._(A_Merman_I_Should_Tur... which Hendrix was disappointed in (compared to both the Beach Boys and Beatles concept albums) but has an excellent stereo image, instrument separation, dynamic range, low background noise...
This is partially the point though. It's meant to evoke a feeling, not to be a picture perfect, clean separation, pristine recording of instruments. One of Spector's sayings when talking about certain instruments in his Wall of Sound arrangements was "Felt not heard".