Why does the cutie mark crusaders don't have their cutie marks yet?

I think there are two to getting your cutie mark. The first part is realizing what 당신 are good at 또는 what 당신 want to do. The 초 part is what twitdrama said "With their talents they need to do something special so like twilight was good at magic but she got her cutie mark showing all her power". However, this is just what I think. Oh and I quoted twitdrama because I liked the diction.

they don't have it yet because they don't realize their gift and haven't done something special with it. Like they could have done their gifts at the talent show. For instance Sweetie 벨 노래 not Scootalo. Scootalo doing sweet moves not 사과, 애플 Bloom. 사과, 애플 Bloom making the set not Sweetie Bell.

Every time they do something, they end up without their cutie marks.

The cutie mark crusaders dont have there cutie mark because thay dont know if thay want to do that for there whole life thay want to see the things thay can do 노래 또는 riding the scooter 또는 catching apples and building things