As you get a bit older and see all of your friends getting married off before you, you do get sick of attending wedding after wedding, while you remain single or not ready for the commitment.
But these kids have started young and are already over the whole thing.
As adults we have all been bored by a ceremony, cheesed off by another wedding guest or sick of being the servant for the bride and groom- but kids don't have the filter that tells them to hide their disapproval and pretend everything is fine. No- they openly show everyone else how they are feeling- thanks kids for daring to tell it how it is!