Not necessarily. If you have an off the shelf home network, and you have a vulnerable device (smart toaster, smart light bulb, IP camera, unpatched laptop, old iPhone or Android version, unpatched router, etc.), wired or wireless doesn't make much of a difference. Once one device on your network is compromised, the entire network is compromised. I don't have to be near you to get that done. Shoot, I don't even have to be in the same country to get that done. I would say, due to the proximity rule, wifi is less secure since it takes less effort, but only in terms of that one rule.

E: added a couple more examples of common vulnerable devices.