That's quite a rant, but I fail to see much value in his arguments? TeX was never meant to parse Math the way Mathematica or other software is? > Free software

That's quite a rant, but I fail to see much value in his arguments? TeX was never meant to parse Math the way Mathematica or other software is? > Free software acts as a virus. Free systems have the potency to wipe out any other protocol or design, including any superior ones (unless they are also free). A example is the various Unix systems and protocols has done huge irreversible damage to society. The same unix systems on which the entire internet runs and he probably relies for his blog post?