Earlier quoted context omitted.
I've never seen an employee getting fired "because their manager didn't like them". I've seen plenty of employees getting fired because their manager, who didn't like them, gave them a bad review. In fact, across companies and even industries, being disliked by your manager is the single most reliable way to get fired. Anyone claiming you can be disliked by your superior yet reliably keep your job - is BSing you. Sin…
OTOH your feelings for your reports correlates highly with the quality of work they're putting out
Sometimes a business that is not a pure meritocracy may have managers who got the management gig because they’re someone’s relative or from some non-work-related connection. They may be afraid they’ll be exposed for not really being that qualified for their job.
If they have a report that produces really high quality work, they may be intimidated and hold off on the praise to avoid placing attention on the report, and on their own self-perceived inadequacies.
In addition to holding off on praise when it’s warranted they may also even write the report up for trivial things such as being 1 minute late to work. So the net effect for the report is more negative reviews than would otherwise be, and less positive ones than deserved.
Human nature is a hell of a thing.