I think technically the correct answer is it depends on which products you have. To say that applying
any wax over
any sealant is pointless, is generalizing the properties of every wax on the market into a single category and we know that's not true. Some waxes last longer than others. You can use different products to get different results.
I'll give you a specific example...
The last car I detailed for this dealership was this Mercedes C230. (Pre polish pic)
After I completed polishing, I washed the car to remove any polish residue. (Fun fact: I've had that baseball bat since I was in 2nd grade and never leave home without it

)
After detailing the engine bay and washing the car, I applied CarPro Hydro2. I love applying this sealant since it's so easy and I can add rain repellency to the glass and protect the wheels at the same time. It also makes drying the vehicle a lot easier. After polishing, there's no protection on the paint so water doesn't get off the paint easily. After using Hydro2, a quick lap around the car with a blower gets 95% of the water off the car.
After blow drying the car, I could've stopped there. The paint, glass, wheels and trim are now protected. But in my experience, adding a layer of a "cosmetic" carnauba will add a lot of slickness to the paint and the alluring aroma of carnauba to the car that's going to spend all of it's time in the showroom.
In this scenario, I don't think there's a replacement for applying a coat of a quality carnauba wax. The sum of the smell, feel and looks can't be matched by anything else. If your scenario puts priority on pure durability, then this sealant/wax combo wouldn't be the best choice. I like the fact that we have options now to tweak our process for the best results depending on our priorities. There's never going to be a single jar of wax that covers everyone's personal needs, just like there will never be a single car that covers everyone's personal needs.
But I think everyone here will be happy to add their 2 cents, just take them all with a "grain of salt" while considering that their needs are not your needs.