Glushkov was never about packet switching, he had an idea to build new dedicated physical network for this project, he estimated that this project will need more resources than nuclear and space program combined (!). It was actually a waste of materials, resources and completely incompetent. And access to that network was planned as very secure, even the project itself was partly top secret.

In real world, we in USSR had very basic X.25 network (built by VNIIPAS - https://en.wikipedia.org/wiki/VNIIPAS) in late 80s, with 2 links to Europe (via Finland and Austria) and X.25 network for universities (Akademset). They were many years behind even European networks and were built on very unreliable hardware. TCP/IP came to Russia only after 1991, no one actually used it before even for LANs (although it was available in stolen source code from BSD Unix).