"Oh he used this SmoothBlast DX Xtrastrong Rubber material? No idea where to get that. Oh it's expensive. Ah, who cares, I'll just use paper. ... ... Ouch, my eye!"
Does that sound familiar? People are doing it all the time with other stuff (my favourite example: safety around resins, respirators and all that stuff). They only read half of what is here. They don't think about the other half. They replace right with cheap and skip inconvenient steps. Then they get poor results. Or hurt.
Bottom line: You're both right. Of course you can do what you want. It might even work - to be honest, I don't think it's that difficult material-wise, you don't need NASA-approved superfibres. But it would be negligent to not explain the risks first. And it's probably a safe bet that even if you do mention them, some people won't get them. Darwin's theories won't ease your mind if YOUR explanation made a twelve year old kid lose an eye or a tooth.
