You're probably right.

A Facebook page with 2.2k followers but no likes or comments such as his likely has a disproportionate number of fake or inactive followers, or its content is not resonating with its audience due to the platform's algorithm prioritizing engagement. 

The most common reason for a large number of followers with zero engagement is that the followers were purchased from third-party services (click farms or bots). These accounts are not run by real, interested users and thus do not provide likes, comments, or any meaningful interaction.

The Facebook algorithm prioritizes content that already has high engagement (likes, comments, shares). If posts consistently receive no initial engagement, the algorithm determines they are of "low interest" and significantly limits their visibility in followers' news feeds, creating a cycle of low engagement.

The followers may be real people who followed the page a long time ago but are no longer active on the platform, or they have simply lost interest in the page's content.

The content being posted might not be valuable, interesting, or relevant to the audience. If the content is overly promotional, inconsistent, or has weak visuals, users will scroll past without interacting, leading to zero engagement.

Facebook has transitioned page likes to followers to simplify audience metrics. A user might choose to "follow" a page to see its updates in their feed without publicly "liking" it. However, the complete absence of likes or comments suggests deeper issues than just this distinction. 
In essence, a low likes-to-followers ratio severely damages a page's credibility and organic reach, making it appear unauthentic to potential real followers.