Catalyst-generated sculk shrieker does not summon the warden nor does it give the darkness effect

If the shrieker is not in an ancient city, it is not "naturally generated". Only sculk shriekers that are initially generated with the Ancient City itself can summon the Warden.

This is not fair

WHAT'S THE PURPOSE OF MINING IT THEN IF IT CAN'T DO ANYTHING

AND WHAT'S THE PURPOSE OF SCULK CATALYST, TO GET SCULK FOR XP ONLY!!!

I thougt i could summon the warden and fight with it 

BUT YOU LITERALLY CANNOT SUMMON IT IN SURVIVAL WITHOUT GOING TO AN ANCIENT CITY WHICH IS USUALLY A THOUSAND BLOCKS FAR!!!!

One more thing

Ancient cities are not present in flat worlds mcpe 

NOW WHAT !!!