I'd be all for it if it's "FREE": in terms of production cost, development costs and operational cost. But that's never the case.

Production cost = higher price per unit
Development cost = there may be a need to make additional UI assets OR longer testing because you're targeting multiple 'platform' (loosely used, meaning 2 different resolutions).
Operation cost = Eats up more CPU\GPU during operation. Uses more RAM and storage space if higher resolution assets are used.

So if the payoff is worthwhile, then by all means go for it.
But if you're not getting significantly better experience from it or if it may even lower the system's performance because it taxes more resources, then wtf?