Why the fuck does caps 'cuck' get wordfiltered?

Why the fuck does caps 'cuck' get wordfiltered?

Attached: pajeet.png (1118x857, 241K)

KEK

KEK

fucking KEK

I AM A KEK

KEK

I AM TYPING KEK ( K E K). NOW I AM TYPING KEK ( C U C

KEK

cuck Cuck CUCk KEK

CUCC
CUC_K
KEK