@のｂるしｔｙぱんｋｙ Re your (now deleted) comments, or what I can remember from skimming them: One reason that "give us a like" might not be the most likely source of « faites-nous un j'aime » is that "give us a like" probably arose ta more or less the same time. The noun a like "a click on that button, an indication of liking" is just as new and odd in English as using like in the imperative

And pedantic rejection of it is probably greater since one of the mortal "sins" in English pedants' eyes is the crossing of part-of-speech boundaries. The stereotypical high school English teacher laments every inevitable derivation.

@LukeSawczak Thanks for the insight! Yes, sorry I removed those, it was all over the place. Maybe the user jcm69 will explain further at some point. So it's more steered by avoiding oddness than by avoiding homophones i.e. "alike". About crossing PoS boundaries, is "pedantic rejection" linguistics vocabulary? where is the crossing here i.e. were you talking about the imperative use, the subst. use or indirectly referring to the "because English" prototype i.e. without preposition ? Thanks again!

@のｂるしｔｙぱんｋｙ When I talk about "grammar pedants", though it isn't a technical term, I mean all those who try to foist grammar on others that is generally (a) outdated or not in line with actual usage but only grammar books, or (b) not even that. In this case, what I mean is that when a verb becomes a noun or vice versa, this morphological derivation often gets such people's backs up, for whatever reason. No doubt it's confounded with a general conservative rejection of neologisms in general...

Such people grieve that youth should text or that the Internet should have been invented. But the process is of course a natural one that has been going on since the dawn of time!

@LukeSawczak Thanks for explaining! Cheers!