"To believe the hype" means to trust or accept the exaggerated praise or excitement surrounding something without questioning or doubting its validity. Full definition
Please don't believe the hype about the high divorce rates in families with autistic kids! (kimseelbrede.com)
I wholeheartedly believe the hype about how important sleep is, how many children don't get enough — and I know mine is one of them who frequently doesn't get enough. (askmoxie.org)