Well for one, Bieber is doing quite a bit of guitar stuff these days. I've actually been surprised by the amount of very obvious guitar sounds in pop in the last ~12-18 months or so. Try your local top 40 station with fresh ears, it's really quite prevalent.
You can argue about whether it's influential of course. Guitar isn't really being used in these songs in a way that carries the entire production, so tough to play on your own with any degree of satisfaction (again though Justin Bieber is an exception).
You can argue about whether it's influential of course. Guitar isn't really being used in these songs in a way that carries the entire production, so tough to play on your own with any degree of satisfaction (again though Justin Bieber is an exception).