This is normal. Back when the game first launched, they gave us the option to have 2 of Cletus' Farms much like how we can have multiple Kwik-e-Marts, Gulp-Blow's & Lard Lads
Sometime before the game launched for everyone in August they had removed this feature. So those of us who were playing since March 1st were able to do this. Just like how they removed the option to steal Lemon Trees. They also removed the multiple Cletus Farms. It doesn't make sense to have more than 1