Youtubers happily do "reviews" in exchange of receiving stuff, regardless if they can keep it or not. They also know that if they are too critical they may not

Youtubers happily do "reviews" in exchange of receiving stuff, regardless if they can keep it or not. They also know that if they are too critical they may not receive anything more and they don't have any material to review. This was already true on paper magazines. No money is exchanged in the process.