I regularly get fake NXP chips even from the big distributors. Not going to name them here, but it happened at least with the ones starting with A, D and M. Their excuse is always the same: Telling us they just sourced other distributors because of shortage at the manufacturer, but won't name these "distributors". Really annoying.
I buy almost exclusively from Mouser and Digikey for this exact reason. They are both very active about ensuring that what they sell is what they say it is.
I'm sure that even they get scammed from time to time, but I've never had a problem with my orders (or at least, none that I've noticed). Their prices are higher, but I consider their markup well-earned.