No, we don't. The OSI reference model keeps getting referenced (hah) in the network courses but it's merely a lip service, nobody's actually taking it seriously: just look at how mobile networks bend over in ridiculous ways to support TCP/IP.
I don't know if I'd say its universally lip service. Perhaps that's true in some areas of tech, but in my corner of the world building an ISP, practically all of network hardware OEMs I'm exposed to (mostly cisco, but also some juniper, arista, and zyxel) use the OSI model predominantly in their product descriptions and documentation.
