On the contrary, it shows that they know very well what they're doing. Their goal is censorship. If that disrupts connectivity for some niche but valid use cases, so be it. The vast majority of people have never used a WireGuard tunnel, so they are unimpacted. Some corporate use cases that even that government would approve of are disrupted, but they can either lie with that or have a whitelist. Most non-corporate use of this and other similar protocols is not something the government would allow.

So, given their nefarious goal, they are doing a great job by blocking WireGuard (and similar protocols, presumably).