Based on my experience, the reason is far more trivial. Someone has a half year goal (KR) that says I/my team will increase engagement by N% from X to Y.
How is does this contradict the comment you are replying to?
It implies there's no nefarious intent to collect some training data. In my area at least the only user data I'm aware of is used for measurement of engagement in anonymized aggregated form. Engagement metrics still exist, because supposedly on yet higher level they translate to revenue, not because of training (unless you count thus feature works do more of it as training). I assume the office org is not different.
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How is does this contradict the comment you are replying to?
It implies there's no nefarious intent to collect some training data. In my area at least the only user data I'm aware of is used for measurement of engagement in anonymized aggregated form. Engagement metrics still exist, because supposedly on yet higher level they translate to revenue, not because of training (unless you count thus feature works do more of it as training). I assume the office org is not different.