In my opinion the blowing up of the two roads by North Korea is more performative for the ROK and international media than anything of substance between the two Koreas. I doubt President Yoon is going to lose any sleep over this:

North Korea blew up the northern sections of two inter-Korean roads, Tuesday, in an apparent attempt to sever all ties with South Korea and formalize a hostile, two-state system on the Korean Peninsula.
“North Korea exploded parts of the Gyeongui and Donghae roads north of the Military Demarcation Line (MDL) at around noon,” the Joint Chiefs of Staff (JCS) said in a message sent to reporters.
Gyeongui Road, which linked the two Koreas in the western part of the country, was primarily used by businesspeople operating factories at the Gaeseong Industrial Complex in the North. Meanwhile, Donghae Road along the east coast was utilized by tourists visiting North Korea’s Mount Geumgang.
The JCS said it fired several shots south of the MDL after the road explosions, adding it has intensified its readiness and surveillance posture. South Korea’s military had already observed on Monday that Pyongyang was preparing to destroy the road.
You can read more at the link, but these two roads have not been used for many years after the closing of the Kaesong Industrial Complex near Panmunjom and the ending of tours to the Kumgang Resort on the east coast. So blowing them up is meaningless and if for some reason one of these two inter-Korean projects were to get restarted the road can easily be repaired probably with ROK money.
North Korea had nothing to lose from this provocation and gained yet again wide media attention which means they achieved thier objective with this stunt.