"...reaching a peak of $20,000 for a single bitcoin before a spectacular plunge in value in December 2017 from which it has never really recovered (it is trading at $3,800 at the time of writing)."
"They don't necessarily have the freedom to call that
forked language "Go" (I'm not sure), but I think that limitation is
OK; it serves nobody to call different projects by the same name. "
The author is allowed to expect a certain domain knowledge. For example, an article about an advanced physics topic is not expected to explain Newton's laws.