Decentralized approaches vs Stablecoin?

I am learning about blockchain, and digital currencies. I am towards the bottom of the learning curve. So far I like projects like Stellar. I like the idea of decentralized currencies. I have been reading about Stablecoin. I am not a fan—central banks and governments too involved in what seems counter to the idea of a decentralized approach.
It seems as though through Stablecoin, blockchain transparency may be exploited for less than ethical means, (as in surveillance, control, etc).

Has anyone thought about the difference in these two approaches In digital currencies? Any pointers to good articles or talks on these diverse dynamics?

Also any pointers to articles on blockchain for a beginner? I.e starting simple and then getting more complex?

Much gratitude