Yet you can link to it from anywhere else on the internet, including from other pages on youtube, and anyone with access to youtube can watch it. A lack of free promotion is not censorship.
However, the contrast between a 70% average recommendation rate and a 0.1% recommendation rate for this video shows the algorithm's bias, fitting the definition of suppression of dissemination. According to Merriam-Webster, censorship includes "suppressing" content by restraining its usual course or inhibiting its reach.