We silently allow $geoNear as an alias for $near in the find language but this is not documented anywhere. $geoNear is only documented as an aggregation stage.

We should consider deprecating the alias and adding a rarely-logged warning. See comments for full original Slack thread.

Before doing so, we should spend some time understanding why this alias was originally allowed, and investigate if $geoNear is also allowed as an alias for the find language's $nearSphere (using $geoNear with spherical: true).