Coincidentally in today's edition of the weekly McMillan newsletter I've been getting ever since I bought one of his plans, there's an article on base training. I haven't read it, nor have I read the article you linked, because I never read any of that stuff.
if it ain't broke, don't break it
Well of course there is loads I could do to learn and improve. But I rarely read any running books or articles; I spend enough hours of my life actually running (and, um, on this forum), I don’t have too much interest in spending more time reading about it.
Dave