>>27165887
breeding incompatibilities

moon stone fucked up the mating process and compatibility of first populations of the nidoking/queen lines, forcing professors to separate their species

source: my ass, probably

>>27165887
Because gender differences didnt exist and neither did genders in the first place, in gen one. And Gamefreak will never ever retcon anything.

>>27165887
Step 1: gen 1 weirdness
Step 2: a sense of continuity
Step 3: if they changed it now the entire dex would be shifted, and the effects of the proposed shift get worse each gen

>>27165929
But they did exist in gen 1, remember Nidoran family?

>>27165929
>Gamefreak will never retcon anything
They retconned a shit ton of mons to fairy back in gen 6

Nidorans were before the addition of genders. The best time they could have changed it was back in gen II when they added genders and retconned it, but screwed up and like >>27165932 said, would shift the dex.

Different stats.

Because genders weren't a thing in Gen 1 when nidoran was introduced.

They probably have thought about retconning it but it'd shift the entire dex, and it'd get genwunners upset because "muh original 151"

>>27165932
Since Victini is the Pokemon number 0 they could replace it to Nidoran's number.

Two entirely different stat blocks for each gender.

No other pokemon does this for all three stages.

>>27165887
>>27165887
Breeding wasn't a thing in the original games. They simply didn't bother retconning it in subsequent games even though gender differences have been a thing for 10 years now.

Technically, the Nidoran lines are genderless.

>>27165972
Victini is #494 in the national dex, right behind Arceus and Snivy. It would be weird to plop one of the Nidoran there.

In short, because the company is composed by faggots.

>>27165958
Thats an update not a retcon