Its not the only defence, important and necessary, but also I think educating children about these risks in school is important (my kids' school does okay at this), and government regulation and criminalising such activity is useful too.
Having age ratings is useful so I dont have to play a game to know its age suitability. Its common for very young children to play games, and age ratings help parents
make informed responsible decisions. There are some dark addictive patterns being used in gaming such as changing the odds of reward to optimise engagement (and make money) - these patterns need an age rating. Additionally, I think age ratings encourage developers to avoid content which would increase the age rating, since they then target a wider audience.
I noticed in the example you shared it highlighted the choice of SHA1 for further attention, because it was deprecated. I think thats good. In this case, lets say I do actually want to use it and pop a comment above it, "SHA1 deliberate, partitioning only, no security exposure" I presume the LLM would take that into account. I'll try it out when I can.