With some of these commentators, every single comment contains a link or two to their blog.
Well, I link to my blog post(s) and/or github source(s) quite often.
"Why does he do that?" has a fairly charitable interpretation, if you choose to answer it that way.
In fact, here you go, I wrote about it and will quote myself...
From my "about" page https://www.evalapply.org/about.html
> Learn generously directs what I teach, speak, organise, code.
and the first blog post I published:
In the beginning, was the domain name https://www.evalapply.org/posts/hello-world/index.html#main
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May I suggest the mantra "Take what is useful, discard the rest."?
The appetite HN has for this kind of naked self-promotion is really something. Get posted (even if by someone else) a few too many times to /g/ and you'll be regularly rebuked with "buy an ad" from then on, but HN just looks the other way, and the "haters" calling it out get flagged, at least until the pattern becomes conspicuous and obnoxious enough that even the more gullible lot of HNers start to notice.