That's more or less true but I leave it disabled for a couple of reasons.
- IPv6 adds no practical performance increase at this point but enabling any additional protocol does add some degree of extra processing for the network stack. It's likely negligible so no harm done on that front.
- The larger concern for me is IPv6 eliminates NAT'ing, which affords a layer of security for most home networks. I'd be interested in @Dave Upton 's thought on this one but since there's no real reason to enable the protocol I have chosen not to for the time being at least.
I don't anything about this, but this is like the third search result on "IPv6 for home network". But if it provides no value, it's a toggle switch to turn it back off. I think I had it on the past several years as well with my Apple hardware.
Should I Use Ipv6 On My Home Network - Livelaptopspec
IPv6 is very important for the long-term health of the Internet. There are only about 3.7 billion public IPv4 addresses. So, if you work at an Internet service provider, manage

Does enabling IPv6 speed up Internet?
Windows, Linux, and other operating systems all have built-in support for IPv6, and it’s enabled by default. According to a myth going around, this IPv6 support is slowing down your connection and disabling it will speed things up.