Clint_L
Legend
They have flat out stated, repeatedly, that "OneD&D is 5e, and 5e is OneD&D" from their perspective (Kyle Brink). So I'm not sure what you are expected with regards to design risks. If you don't like 5e, then OneD&D is not going to be for you.Well, in earlier surveys their support was still high enough to keep them, so I think something did change there. It's quite obvious some people didn't like them, it's not like the Aardling opponents were shy to express their opposition. So yes, my supposition is that what changed is that as a response to the OGL disaster, the design team is going conservative to preserve the most widespread support.
As for why they should support stuff people don't like, well, designing a game to always please the least-common denominator and never taking any interesting design risks is how you end up with a game as generic and bare-bones as 5e in the first place. Obviously I'm not going to argue it's an unsuccessful tactic, but it's just not interesting to me any more, and signals to me they don't want to take any risks at all in their design.
Also...what kind of design risk did Aardlings represent? They were super basic and generic, and there are already a plethora of animal-folk races in the game that are much more thematically fleshed out.
But what do I know? I'm just a grognard.