Those pages usually just say "Something went wrong. Try reloading."
After several reloads, I was able to see that the second one said, "lol, this [redacted] lispm [redacted] is badmouthing me again," the third one was basically a link to http://xahlee.info/emacs/misc/hackernews_lispm.html, and the first one was a repost of some of the (extremely abrasive and unpleasant) text on that page.†
On his page about Naggum, which is linked from the above, he writes:
> During 1998 to 2004 when i read comp.lang.lisp mostly of his posts, i also post maybe a couple a month on average. Most of my posts are trolls (of the good sort (see: Netiquette Anthropology.)), and part of it is riding his name, criticizing or making fun of his attackers, and criticizing or lampoon him too. They are mostly not technical. Most are writing exercises too.
This does clearly demonstrate that the characterization in this thread of Xah Lee as abrasive, unpleasant, and a Usenet troll is correct.
However, it also appears that lispm's characterization of Xah as never having written a line of Lisp hasn't been correct for many years. Considering only public code, I think http://xahlee.info/emacs/emacs/ergonomic_emacs_keybinding.ht... alone is a larger contribution than Naggum made in his entire life. Naggum's contribution seems to be a bit under 800 lines of Emacs Lisp which is still in current Emacs but basically unused. It's a little unclear, though, because http://xahlee.info/emacs/emacs/ergonomic_keybinding_qwerty_4... is a little under 600 lines, and I'm not sure how much Xah wrote of the several thousand lines of ergoemacs after that point. But he's also written several smaller things like http://xahlee.info/emacs/emacs/xah-get-thing.el (259 LoC), http://xahlee.info/emacs/emacs/elisp_replace_string_region.h... (97 LoC), etc., under the GNU GPL v2.
Of course line counts measure effort (the cost) rather than any measure of actual user benefit. But I think we can fairly say that Xah has by now put more effort into writing code for the Lisp community than Naggum did in his lifetime.
In http://xahlee.info/comp/blog_past_2011-01.html he explains that he basically never contributed anything until 02006, eight years after the thread we're discussing. However, most of the Lisp code he's written is only available by donation and presumably proprietary; for example, http://xahlee.info/emacs/emacs/xah-html-mode.html and http://xahlee.info/emacs/emacs/xah-go-mode.html. In other cases, such as http://xahlee.info/emacs/emacs/emacs_extend_selection.html, http://xahlee.info/emacs/emacs/emacs_navigating_keys_for_bra..., and in general everything I've looked at under http://xahlee.info/emacs/emacs/xah_emacs_commands_index.html, the code is publicly available but unfortunately doesn't have a clear license, something I've often been guilty of myself.
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† Personal conflicts between lispm and Xah go back many years. http://xahlee.info/UnixResource_dir/writ/scheme_fail.html is one of numerous places where Xah personally attacked lispm, in this case because of a factual disagreement about the historical dynamics of programming language adoption.