Because you have the originality of a late 90s FanfictionNet writer.
You're taking Vicky, a hideously ugly, vile, cruel, gold-digging cunt, and turning her into "Grumpy Frankie Foster on her period" whilst giving her ridiculous off-model body figure. But, in order to indicate "yeah she's still a mean person :^)" and serve double to clear the main canon opposition away you have her cuckold her little sister (literally the only kid on the entire show she showed some care about at one point, even if it was retconned) and insert your decidedly Jewish NTR fantasies into your content that might otherwise have been passable as a crackship. Once you've seen it once, you've seen it all, especially since these threads just tend to be reposts of reposts of aging Garabatoz artwork.
Worse yet, this relentless drive you have to turn Vicky/Timmy into an item has ultimately served to railroad her character into a divisive, and ultimately doomed school of thought for her character, in that the only way her worth can be justified is if the show gets a miracle revival that ends with her banging Timmy, which would never happen.
Sorry for the blackpill, but you needed it.