The people building infrastructure that depends on one guy's 3D model existing on his blog at all times were the ones who made a mistake. If one of your thousands of dependencies breaks, shame on you, make a fork. The dependency owner owes you nothing, and he can change his creation or remove it any time he likes. If you weren't fortunate enough to fork it while it was still up, then too bad.
Instead we as a corporate community are encouraging coddling and ensuring that if you make this mistake, GitHub, NPM, et al will take care of it for you. The downstream effects of this are much worse than the temporary damage of making people actually figure out their dependency chains.