the OP forgot a few things:
The undisputed iconic UN General Assembly Speech that garnered the group incredible respect globally
First ever Daesang sweep for not one but two award shows
Burn the Stage The Movie released worldwide (a first for an Asian artist) was the highest grossing cinema event of All Time
First ever Grammy nomination for Korean group: LY Tear album art
Continuation of the first-ever Korean group appearances on TV shows like America's Got Talent, GMA, Ellen, Graham Norton, etc
First Korean group performance at the BBMAs & first to be awarded at the AMAs
Became Twitter's most tweeted about account that year and had the most liked tweet of 2018
And many many more. Man, 2018 was THE year for them