That was a new thing I learnt that Mireuk(Maitreya) Buddha is a Buddha for future, I believe many would probably seek for the blessing before doing any important steps in their life. I can imagine that many parents will pray for their children to get them blessed too.

The statue is huge and also you are there are some people praying, nice that they can have their moment for themselves, to gather their thoughts and to be for a moment one to one with that heavenly moment to get that feeling of blessing and relief.