I disagree wholeheartedly... beat production is hard. I can garauntee that nobody has it completely on lock down on this site (loop production, sound shaping, waveform synthesis, filtering, mastering, layering, effects, acoustic engineering). I myself am extremely good at creating loops, filtering and dynamics... in fact, I'll say that I am better than most, but sometimes complete song construction evades me. Should I quit trying to produce because I only know 80% of my craft. Not going to happen, it is like everything else... I will learn it eventually.
I myself think that I may be too far along to benefit from the article, but a new producer could probably benefit greatly form having that as a springboard.