Nonsense on stilts. More serious exploits are routinely found in everyday tech. This is not a serious exploit, a stock install of WordPress isn't vulnerable. The idea that WP somehow is especially complacent about security compared to other major software projects is just a trope.
I'm sympathetic to the idea that WP need not be exposed when a site can be delivered with static files. That's a fair argument that I agree with. But no one's advocating abandoning IOS or Windows or Android because if you install a certain app, or if you use a browser or open a certain type of file you run the risk of exploits. To advocate the throwing out the baby with the bathwater over a bug like this suggests you cherry pick your concerns and/or have an axe to grind.
I'm sympathetic to the idea that WP need not be exposed when a site can be delivered with static files. That's a fair argument that I agree with. But no one's advocating abandoning IOS or Windows or Android because if you install a certain app, or if you use a browser or open a certain type of file you run the risk of exploits. To advocate the throwing out the baby with the bathwater over a bug like this suggests you cherry pick your concerns and/or have an axe to grind.