I mean, I guess it's just hard to understand for people who have never lived under such a system. In Poland it's relatively common for people to say that life used to be "better" under communism, even though yes, what you could buy was limited, where you could travel was limited and sometimes yes, you would be assigned to a post somewhere and had to move there whether you wanted to or not(freshly graduated teachers would usually be assigned to a school in the country that needed teachers, with little personal choice). All of that sounds horrendous from the perspective of western countries today(or well, in fact, Poland in 2019 too), but not everything is just black and white - there were good things about it too. Excellent quality of education. Of healthcare. Public transport that was cheap or free to use, and regular. Massive investment in infrastructure. New things which were built were usually built with citizens in mind first, not profit.
Like, it's really hard to explain because you'd never see the benefit of that over personal freedom, but I get why older generations are nostalgic over it. I wouldn't go back to it but it wasn't all bad.