"network manager can be configured using nmtui in cli."
GUI doesn't have the "ignore automatically obtained DNS parameters", only 'Ignore automatically obtained routes", so you have to use nmtui
The people who run the RPi manufacturing operation decided to replace dhcpcd with nmcli as the default DHCP client program for the bookworm release.
The first Raspberry Pi OS that supports Raspberry Pi 5 manages the network settings by default with NetworkManager,