There are 3 reasons to hardwire.
1: To keep your in dash socket open for other stuff
2: To keep wires off the dashboard and not draped all over the place.
3: To make it possible for the camera to do parking mode.
Hard wire kits in general also have a build in BDP ( Battery Discharge Protection ) so you can set a low voltage cut off, and thats a good idea to keep as far over 12 volts as you can ( depending on your need for time + parking mode )
Also if you use parking mode it is sort of a constant parasitic drain on your battery, so you have to drive some to replenish your car battery, so not a option to do parking mode for 23 hours every day and only drive 1 hour.
For parking mode it is not advised to do so with regular 1080p 30 frames footage, this simply generate too much heat in a car not least if it is parked outside in the sun, the latest to remedy this and still have 1080P 30 FPS are to use a lower bitrate while parked, this also mean files are smaller and so you can have room for many more hours on a memory card.
you can use a Rhundo 3 way splitter
https://www.amazon.com/gp/B07BRD6N1BIt have a range of options like BDP and a timer ASO,,,,, BUT ! many of the new dashcams need a purpose build hard wire kit to function ( often 3 wire kits )
So using the Rhundo for true parking mode are not really a go, but it can keep a camera live for X time after key off, or maybe something you want to charge while parked.
Especially in a car like yours with a always on socket in the dash are the Rhindo gadget nice. But as the camera are kept on in regular recording mode it is far from a ideal option, and also all you get are just hours of recordings, so if your car got dinged while parked you got to see it yourself and dig out when in among all your footage.
True parking mode put events in a read only folder where they are safe from deletion for a good while if not for ever, and a trigger of the G sensor will give you the exact time so you don't have to dig around to find it.
So look at the Rhindo gadget as a nice thing to split your dash socket up and make things connected to it manual turn off able or automated with a timer or low cut off ( but not really a dashcam in parking mode )
I have it in my car but just use it on a regular ACC fuse, and use it to power some cameras ( many of those in my car ) so the advanced functions i don't use.