Those tend to get overlooked by people longing for the old days.
There were also a plenty of 'underground' artists, who had a day job of being a book illustrator, and did some stuff on the side, which they only would show to the close circle.
can parents support their child that is an artist with their income? or the state knows everything about the artist (her age, fit to work so on) and will compulsorily draft them to work?
[1] https://en.wikipedia.org/wiki/Parasitism_(social_offense)
Could you provide evidence for this?
I know my uncle was supposed to go to one company but then that didn't work our for some reason and he had to look for a job himself, which was supposed to be rare. That would be early 1980s.
Your description of artists' life is pretty simplistic and one-sided. There were some people who did propaganda posters, but there were many things that existed outside the political domain, from book illustrations, to paintings with less ideological overtones, to working in theater. There was also Soviet cinema and animation, which would hardly be seen as only a propaganda vehicle, there was a lot of very nuanced works, which raised important questions. A lot of good stuff was shelved, or circulated underground of course.
The Russian Novel That Foresaw — but Underestimated — Totalitarianism
https://www.newyorker.com/books/second-read/the-russian-nove...
It is an interesting film in general, and in context of your comment from the politics of art perspective -- it starts with a Nazi lecture on the "degenerate art" of 20s-30s, to art class lectures in Communist times, and ends with the equally ideological forces dictating "what's art" in West Germany (where are hero finally achieves fame and fortune.) It's East German variety of old regime/new regime but likely will resonate at some level.
We all have family or friends who were artists before 89. The state arranged structures for artists to have jobs and even subsidised it strongly, so working people could afford to experience culture.
They had one job for life, the state made sure. They had apartment or house, the state made sure (if you were young family expecting child, they would just give you one). The wages and pensions were enough to live on, the state made sure.
In their eyes, there were a lot less existential threats (like losing a job or the rent getting too high you lose place to live) than under the new regime, life was "fair", no fancy enterpreneurs making millions while working people struggle.
Jumping to a world where nothing is certain and you're two bad months from homelessness after a lifetime of working was quite a shock for them. The message (however not all that real) of the old system was "we're all in this together" and the new one was "everyone for themselves, no caring about others" especially in the wild years after revolution. Some people are still sad about that.
(They also turn to fascist and populist politicians now as a replacement which isn't great.)