Typically, frequently rebooting electronic devices shortens their lifespan. This statement is debated whether it is still applicable now.
network connections issues (both WIFI and Ethernet) have been resolved via using the "Reboot Router" choice on the router Admin page.
Routers should be abled to run 24/7/365 without issues. If you need to reboot the router as "preventative maintenance," there are some underlying issues in your network, such as broadcast flooding, multicast flooding, legacy WiFi devices, and improperly configured band steering or access point steering.