I wouldn’t say it’s useless, as non-lawyers can certainly understand contracts, and non-lawyers who’ve thought/learned about the relevant issues can have useful insight (though of course one should always consult a lawyer with relevant expertise when dealing with any contract!). I agree, though, that opinions from lawyers would have increased the worth of that article.
Coincidentally, I‘m a lawyer who looks at a ton of contracts for my own company, so I’m eager to read the actual contract thoroughly when I have the time, and try to work out my own understanding of what the heck it really means...