I really don't see any functional benefit to the factory hitch - and more downside if it requires cutting the bumper.
Not mentioned yet: There is a Curt Class II 1 1/4" hitch. I went this route because I already owned 1 1/4" tow bar accessories like the ball mount and a bicycle carrier. Also the CX-5 factory hitch and tow capacity lines up with Class II. You can view pictures on etrailer which is were I have purchased hitches for at least 4 different cars. Great service, prices and installation help if you need it. I also used the T-connector for trailer wiring. And, instead of running a power wire to the battery I tapped into the rear accessory outlet on the right side (blue wire on my 2018). My wiring sits inside the car under the rear spare tire panel until it is needed. Living in the salt belt this is my preference for trailer wiring.
If you prefer to pay someone to install the hitch and wiring then see if there are any trailer hitch specialists in your area. I know many have used u-haul or similar with good results. In my area there is a shop specializing in trailer hitch installs and accessories. They are fast and do good work. Dealer or independent shops can also do this for you - but this is a rare job for them. But if you have a good relationship with a shop I'm sure they would take the time and do it right for you. You just have to be willing to pay for a good job.