"Smithing" in English refers to making something, in the sense of a blacksmith forging iron. So in this context "bugsmithing" refers to making bugs -- deliberately (more or less) doing things differently or incorrectly so as to increase the impedance required to do work on less popular platforms. Microsoft was famous for this.
As far as I understand, it's a site criticizing HN, by summarizing in a satirical tone the discussion on some of the top stories.
The about page:
About this webshit
[...]
Hacker News is an echo chamber focusing on computer posturing and self-aggrandizement. It is run by Paul Graham's investment fund and sociopath incubator, Y Combinator.
In general, content that can be submitted is defined as "anything that gratifies one's ineffectual curiosity".
"Smithing" in English refers to making something, in the sense of a blacksmith forging iron. So in this context "bugsmithing" refers to making bugs -- deliberately (more or less) doing things differently or incorrectly so as to increase the impedance required to do work on less popular platforms. Microsoft was famous for this.