Kind of. But it's deeper than that.
Whatever you might say about the relative strengths and weaknesses of the approaches, there is a definite difference in the approach of 4e and 5e. A way to describe it is that 4e tends to be more prescriptive in the PHB and (ESPECIALLY) the DMG(s). The 5e model, on the other hand, goes out of its way to avoid being prescriptive, often to the point of near unintelligibility (do you roll dice in the open, or not? is fudging okay? whatever, man, it's all good!).
So in 4e, to not allow a short rest between encounters is, quite literally, doing it wrong. It's the exception. It's denying players their encounter-based abilities. It is ... well, encounters are defined by short rests!
On the other hand, 5e has these recommendations. But ... it's all kind of wishy-washy, right? Does every party have 6-8 encounters per day? Do most? Do DMs make sure that a party is going to get the 2-3 short rests? I've seen a lot of D&D games, and while there are tables that do try and adhere to that, I'd say that this recommendation is far from the norm. Moreover, whereas in 4e if a party doesn't get a short rest between encounters, the DM has definitely messed up, in 5e it is entirely possible for a party to want (or need!) a short rest after an encounter and for it to not be possible.
Which again circles around to the idea that the concepts behind the games are ... different. 4e is tighter (is that a good term to use?) in that aspect.