Well, for one thing it has developed into a legitimate staple in every format from Standard back to Vintage, along with seeing a decent amount of Commander play, so the demand is huge
Rather than ramping to big Creatures or going wide with 100 Creatures, Elven Councils Commander Galadriel, Elven Queen relies on voting of the council to generate value from +1/+1 counters, card draw, or the sets theme mechanic: tempting of the ring
Yes, Flynn is cheaper and has Shift, so you can get him out even earlier
Many highlight how its synergies feel rewarding, turning a lighthearted theme into a competitive option
The effect that Musk witnessed is similar to that seen in a video on Dan Chan's YouTube channel
Then again, casing a Smoke Spirit's Aid before throwing down a board wipe could be a really great way to leap ahead of the rest of the table