MLP specifically, but sure. And that I agree: it made a lot more sense when it was still within the MLP fandom, as the MLP fans who approached fluffies approached them in a tongue-in-cheek manner. The problem is that the nuance was lost when fluffies sort of left the MLP fandom and attracted more non-MLP watchers.
I actually dispute this, but only because @Carpdime did the first foal-in-a-can picture. Breeder pictures seem more of an offshoot of similar themes from yukkuris/jissos, so its possible that what you said may be true, but it is also possible those fandom had an influence on fluffies. ¯_(ツ)_/¯
Thats another thing I’ve been uncomfortable with - foals just having an innate vocabulary to begin with. Granted, if fluffies were an actual robot with an in-built CPU and programming language, then yeah, I can live with that, but given that they’re “born” the concept just seems so weird.
For a number of my own stories, I developed a headcanon where fluffies are taught the language, sometimes via television (hence FluffTV). In addition, I wrote that fluffies gad a brain designed to speak a language, and fluffspeak was a simplstic language that they could master the most easily. But of course, thats all my own headcanon. (or rather, one of them, I have a few very different headcanons dependent on story)
End of the day though, it really boils down to how much one sees fluffies as a biotoy or as an animal.