I understand the need for proper formatting in academic papers, but it wouldn't hurt anyone to provide a text copy after the fact.
If someone needs a formula they can render the pdf. But a secondary text copy can be more easily indexed, searched and viewed on any kind of text-viewing device... it's just a million times more convenient.
It "hurts" in that it takes time. It's also not just math, but figures as well - diagrams and experimental results. There are automatic Latex-to-HTML programs, but their results are not pleasant. And I have difficulty putting up things that are ugly.
If someone needs a formula they can render the pdf. But a secondary text copy can be more easily indexed, searched and viewed on any kind of text-viewing device... it's just a million times more convenient.