For sure and I'd imagine these have to be designed with pretty high sampling rates internally to make sure they don't introduce too many artifacts and sampling issues.

But beyond musicians being able to hear what they like and don't like I don't think anybody understands what is going on. It's quite possible aliasing is part of "sounds digital" when a musician uses that as a pejorative... newer digital processing sounds less digital through better algorithms and likely things like better handling of aliasing.