I'm not sure I understand the "just generate it" perspective. If you want to generate a much higher sampling rate signal that has a common multiple of your input and output sampling rate, "just generating it" is going to involve some kind of interpolation, no? Because you're trying to make data that isn't there.

If you want to change the number of slices of pizza, you can't simply just make 160x more pizza out of thin air.

Personally I'd just do a cubic resample if absolutely required (ideally you don't resample ofc); it's fast and straightforward.

Edit: serves me right for posting, I gotta get off this site.