what do you think the reason why genshin don't even have any debuff characters at all??

I'm not talking about res shred I'm talking about why mona is the only character who actually has a debuff into enemies enemies at her kit

wasn't it because it's hard to code than buffs?? even in their other game hsr has nihility path which is the debuffer path is really weak compared to harmony the buffer path

I don't know how coding works and I don't know games outside hoyo but is debuffing enemies hard to code??