Might or might not be the same guy, but it's close enough to not matter.
It's definitely possible I'm just not smart enough to understand this, but how does one go about learning to comprehend stuff like this?
Unless of course you simply want to be seen as the type of person who reads Russian literature, in which case thelastpsychiatrist.com is probably better for reading...
Personally for instance, I read "Shame & Society" once, found it fascinating, but couldn't really pinpoint what I had learned, so I re-read it and took notes, as well as try to summarize and articulate the big points and how they related.
Also I don't think TLP quit because he was doxxed necessarily. If that were the case, he wouldn't have kept paying the site hosting fees all this time. I think he decided the blog had become too much about his identity as a sort of minor messiah figure in the eyes of his readers, which is sort of against the founding principles of the blog itself. The character or voice he created for the blog was gaining too much power. Having his real name revealed was only a secondary concern.
He probably still writes somewhere though... probably, he's a well-respected/beloved voice on some obscure phpBB board or similar (real TLP heads will know he used to read/post on Metafilter back in the day.)