Yea, it is really silly of the landlords. I'm very glad, honestly, to hear that most people have never heard of it.
Here, in this large city in Ohio, every single thing said "No pets" or "Declawed cats OK" or "Cats Ok" and when you called and said, oh I have a cat the first thing outta their mouths was "They have to be declawed."
So sad. When I finally found this place I was all ready to sign the lease and saw the clause about declawing (no pun intended!) I almost started crying. She let me cross it out though, initialled it, and I had to sign an extra form about paying any extra costs resulting from having a clawed cat.
I thought it was this horrible finding a place to rent with a clawed cat everywhere. It is possible, but I finally understand how the clinic that spayed Zissou also did declaws, claiming that so many people couldn't find anywhere to live without it. I can see how it would be hard, this apt is in a higher price range for its size.