I don't think any group can even afford to not promote in Korea other than BTS. Others will tank so hard after the first 24 hrs if not promoted.
Anyways BTS songs are more known for their longetivity on the charts and I think 'Butter' will be on higher end of the charts by the end of this year. For me it'll be more interesting to see if it stays higher than 'Dynamite' or not by that time.
Ngl, their prev Variety Show appearances on March-Early May blindsided me. Made me thought they'll start doing variety shows again for their CB after almost 4 years (since DNA era). Then, they just give us 3 Butter American promo stages in the first week then dipped (most likely for the festa and to prepare for muster ofc: but tbh those contents are only consumed by fans).
I'm truly glad butter is doing as well as it did atm with very minimal promo. Well it might do a bit better with more promo earlier but it is what it is. It aint no Dynamite but it did what it did on the charts. I'm hopeful it'll do #1 for 4th week on both Gaon and Melon since Aespa will high likely get it by tomorrow. Bcos once it starts going #1 it will stay there for a while until next big song comes (Well MSG is coming next week but still it is one week away so aespa have more chance)