I think it's possible to make the valid point that just hiding your communications, even if done perfectly, is not enough, and pursuing social change in addition to that is also needed, without casting baseless aspersions on cryptography in general. TFA strays too far towards the latter IMO.
That only a fraction of a percent of humanity is currently capable/willing to ensure that their crypto ducks are in a row is a more valid point, and how to get the general population to choose the right platforms/apps/providers when there is no way to establish trust relationships that is not vulnerable to everyone ending up trusting a prick -- that is also a valid point.
Eventually, however, social prohibitions against snooping will become impossible to enforce at the individual level, forget at the institutional level, just like it has become rather impossible these days to stop a determined individual from eavesdropping on face-to-face conversations, nor even prosecute them were a listening device discovered, if they were careful enough. There's a window past which the technical execution of strong crypto will be the only recourse left.