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Pretty much everyone (especially at home) is using only IPv4. IPv6 is always perpetually on the horizon.

The better argument would have been that using a /23 or /22 subnet should probably be enough for most home automation setups.

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5 years ago your comment was spot on. Now in the us it is common to see dual stack v4 v6 on residential and mobile connections.

Comcast and Verizon will dual stack you, sure. As the largest two ISPs, they're out of addresses. But a lot of other ISPs won't, my ISP doesn't support IPv6 at all.

I’m more talking about what people are actually aware of. Yes, most systems have IPv6 enabled and use it when possible, but it’s mostly invisible. When you login to a device to setup the IP address, it’s still almost always IPv4. That’s just for the internal networks, which is what most home users are thinking about on this topic.

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