C2. Can't edit IPv6 config? Do I lose out much if I keep it disabled then?

On the Wireless Internet settings, when IPv6 is enabled, all the details for both IPv4 and IPv6 are displayed. But when I click Edit, I can only change IPv4 settings. The DNS setting for IPv6 can't be edited and inherits sus ISP DNS server from the router.

Do I lose anything if I disable IPv6 on the TV?

Edit: This is very critical issue for me because my ISP Airtel is a duopoly in my country and the top 2 both have the govt blessings to force locked ONT routers to consumers with intentional problematic bridging/repeating capabilities, deep packet snooping, router uPNP snooping, locked DNS etc. Whoever kid or adult, govt decides to not like, govt directs their gestapo agencies to dig through these no matter how old, and find whatever excuse they can use to target people.