Do those access the Czech government website?
“DAD, YOUR SPRINKLERS ARE HACKING THE RECYCLING COLLECTION TIMETABLES AGAIN”
(spend enough time around places like this, though, and one could easily imagine this being a thing in 2032)
That said, I have to imagine that there probably are plenty of those devices that do access Czech internal services at least.
It's 2024 and Fidonet still works.
Nobody's sunsetting IPv4. It will fade into obscurity on its own as IPv6 adoption increases and IPv4 addresses become increasingly hard to get, as it should.