It entirely depends on how they're produced.
If they're just made like normal people who are just genetically modified to have cat ears, different eyes, tails, etc. then it would be an issue if they are capable of the same mental faculaties
If they have the mental capability of a cat, same behaviors of a cat, and just have human aesthetics, then it would be fine.
If it's just a glorified sexdoll, it would probably also be fine but I'd judge you silently.