If you're looking at "30 years of history" then shells have endured "weird shit in filenames" for their entire existence and civilisation hasn't collapsed. Clearly, we don't need to change anything for them so I don't think filesystem are going to recant on their longstanding policies by making any changes to further accommodate scripting languages in our lifetimes.

Meanwhile, new shells (or new versions of shells) come and go all the time. Could one of these implement a foolproof (or at least, foolresistant) way of escaping arguments? Maybe.