Because capitalist Russia is pretty shit. The only thing it's good for is opposing the US hegemony, but even then it's still pretty cringe with it's capitalist oligarchy.
Compare modern day Russia with shit like the Soviets sending the first women to space. Seems like they were pretty progressive for the time compared to now?
How the mighty have fallen. You hate to see it.
Almost definitely. But rights rollback only really happen when conditions are noticeably worse, and people need scapegoats. It shouldn't work in a communist society but these things aren't easy to overcome societally, especially when hostile foreign powers are basically fucking with you non-stop one way or another, often with the dividends paid on having colonized and stolen much of their historical wealth which would have been really useful for implementing reforms.