Like this guy, for example. From Japan Today:
TOKYO —What’s cute, frilly and metal all over? BABYMETAL of course! From relative obscurity only two years ago, to doing various concerts around the world in 2014, the presence of BABYMETAL has been sudden, if not shocking. It’s hard to believe that the combination of idol music and hardcore metal has created something that many people are getting fired up over. In fact, BABYMETAL has such a fan base now that their self-titled first album was voted as the Number 1 Metal Album of 2014.
The online metal magazine MetalSucks asked in a poll to rate the best metal album of 2014. It was a close vote, with Ne Obliviscaris’ Citadel reeling in 539 votes and Behemoth’s The Satanist getting a solid 388 votes. Nothing though could stop BABYMETAL’s rise to the top.