The soviets absolutely respected their anti-colonial stance, not only did they free Russia's colonies but they also contributed to anti-colonial movements. Regarding religious freedom, it was actually quite high. Atheism was pushed by the state, but protections on nationalities also protected right to religion. Political freedom was also much, much higher for the majority of society, who remain disenfranchised by capitalist systems.
As for queer rights, penalties for being gay were often lower than in capitalist countries, and usually gay rights were at the forefront for capitalist countries. They were severely lacking compared to today, but compared to their peers, they were progressive.
I don't see how referencing post-socialist states, where reactionaries took power, indicates anything of meaning when it comes to human rights under socialism.