This reminds me of the advertising in the 1980s. New speakers were often labeled "digital ready" (to be suitable for use with the new CDs), as if they were actually receiving a digital signal from the power amps! As stated by others above, sound is sound, and every speaker is as ready for new formats as it is for sound now. Marketing is what drives such claims.
Basically, you need to be careful about any and every claim made by any and every manufacturer or seller. And any and every claim by anyone who might have believed something claimed by the above.
So, when someone tells you something, always double check if you are not in a position to know that they are right. Remember, someone can be honest and still be wrong; one needs only be mistaken to say something false. Curiously, people often imagine that they are being accused of being dishonest if one suggests that they might be mistaken, which does not say much for their intelligence.