Just saying this, BB, Infinite etc boygroups were very critically acclaimed internationally too. But metacritic seems like only started write review since 2018. The Canadian music critic I follow (he has a blog and he reviews most kpop music even incuding nugu groups and artists) reviewed lots of BTS's music group. They have scored amazingly good. Most of their songs got 8-9 out of 10. Same with BB and Infinite etc groups.
DM me the link