This effect is often true for people whose native language is math :-) But to be fair most disciplines have their own jargon, math happens to have its own keyboard too.
Most other disciplines don't try to force their jargon onto other fields though. Math often does.
Also, I'd generally say that almost all jargon is bad. A quote that's frequently attributed to Einstein says that "If you cannot explain something in simple terms, you do not have adequately understood it". Math and science in general should take this to heart, because I feel that many people have forgotten this or never really understood it in the first place.
I agree the applications were glossed over or skipped, but that is probably the most interesting aspect of the equations as well.
Without practical information, the article is sorely missing true sustenance.