I don't advocate enforcing its usage, I just think it is more appropriate in these circumstances. The reflexive form isn't well established, but I don't think t

I don't advocate enforcing its usage, I just think it is more appropriate in these circumstances. The reflexive form isn't well established, but I don't think that particularly matters. Languages are messy, and its difficult and futile to enforce prescriptive logic on them. To build upon your example, if you search for the form 'learn for themselves', you'll find that many people use the phrase with nouns which are nominally singular, such as 'this is something that each generation must learn for themselves'. Well, so be it.