You are correct.

The post is pointing out the difference between attribution and advertisement.

English is my first language and you have me second guessing myself.
Citations are typically used for sources in academic papers or Wikipedia.
Quotes often get misattributed to various incorrect historical figures.
Accreditation is probably the word I should have used, but attribution is what I was seeing in comments the most.
Also, to me accreditation sounds like something a university or a mortgage bond would seek, not so much an artist, but honestly I don’t know for sure.

Ramble aside, yes, they essentially mean the same thing.