Last time I saw hardware Ethernet switch was 20 years ago. 8-[ ]

There's one in your house probably. It won't frag packets between your wired PC and your wired printer.

There are also certainly a shit load of them in closets and top-of-rack all over where I work.

Plenty of routers today that can't fragment packets. And they have rate limiters where they can only generate a small amount of ICMP 3/4s (maybe 50 a second).