The guy who recorded the Hani fancam (which is now at 4 million views) was recently invited to a dinner with EXID as well as Shinsadong Tiger but turned it down in order to record other girl group fancams.
Looking through his youtube channel, recording all those fancams is a fulltime job. He has videos uploaded as little as five hours ago. It's probably not out of the question there are multiple people running around Korea delivering to us the freshest fap material on a daily basis.
I feel really conflicted about this. This guy is either the biggest alpha or beta on the planet. Not being able to actually hear how he rejected the invitation I can only imagine if it was either like, "N... No Shinsadong Tiger-kun, I... I have other fancams to film. Maybe another time, please." (*`д´*) Or if it was like, "Heh... I'm needed elsewhere, don't wait up". (•_•) ( •_•)>⌐■-■ (⌐■_■)
Ultimately I think the real reason is that 떡볶이 and semen simply don't mix.