Not Today was a forgettable comeback
Firstly, I'm not saying that Not Today was a bad song. I adore the song and it gets me hype whenever the chorus plays. It's just that I feel this comeback of BTS was forgettable.
Now let's consider what were the main comebacks of BTS in 2017. You had the ultra-massive success of DNA which stormed BTS into even more fame after their recent releases in 2016. Next, we have Spring Day, an extremely memorable song that is still loved by the Korean General Audience even after 6 years. And of course, Mic Drop with the roots of success to DNA.
Now for Not Today it kind of feels like it's just, there? Like I don't see it being as successful as DNA nor Spring Day. Mic Drop was popular to say the least (my assumption) was because of the remix.
Why do I think this is unpopular? As mentioned from the previous paragraph, Not Today feels kind of pressured from the giant releases of 2017. Id always see Not Today being briefly mentioned but never talked thoroughly when discussing much of BTS 2017.