That's why Matter and Thread are IPv6. You don't need IPv4 at all... and if you run out of IPv6 address space, I'd love to see just how many devices/sensors you have in your home.
What might be a problem is the number of devices that can be connected. For example someone who is using an Xfinity Gateway for their WiFi has a limit of 100 devices on each band (2.4 GHz, 5 GHz, 6 GHz) if they are on an XER10, XB10, or XB8. An XB7 can have 75 on each of 2.4 GHz and 5 GHz. An XB6 can have 30 on 2.4 GHz and 75 on 5 GHz.
