Not to my knowledge. I think that's a combination of social media expectation and mis-informed video CMs. The expectation is to ask at the attraction how you can be accommodated. Not to simply ask for -- or expect -- a return time. Most often the CM will expect your party to enter the queue and try to wait; then if someone needs to leave the queue they'll inform you how to re-join your party. Depending on party size and make-up it may be handled differently, but most are expected to try the queue.
Both WDW and DL utilize what I guess is officially deemed Location Return Times, or a.k.a. wheelchair return times, for attractions that are not accessible to mobility devices. DAS is not required for this. And it's not at all new.