Since RESCENE is a public favorite, many people don't realize how boring their official YouTube content is

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It's not just RESCENE that's boring.
If you look at it optimistically, official idol YouTube content is just "mildly boring."
I had zero interest in idols,
but I started watching some content after getting to know them through LE SSERAFIM's Le Sserafim TV (I wasn't interested in LE SSERAFIM's music, though).
LE SSERAFIM's early Le Sserafim TV had HYBE's capital investment, so the quality was high enough to be worth watching, but even then, you only watch it because the members are pretty.
Looking at other idols recommended as being "fun," they don't invest in content like LE SSERAFIM does. They're all just boring.
If you think official content is fun even when it's "mildly boring" and they aren't doing anything special?
That's the path to becoming a hardcore fan.