Confused when delivering PrimaryKeyRelatedField to the Client

[AsheKR]

in official document, it is confusing when using it with the client.

I don't know if the tracks will contain id or Object just by looking at the field name.

class AlbumSerializer(serializers.ModelSerializer):
    tracks = serializers.PrimaryKeyRelatedField(many=True, read_only=True)

    class Meta:
        model = Album
        fields = ['tracks']
    
        def create(self, validated_data):
                tracks = validated_data.pop('tracks')

If change the tracks to track_ids, you get data using validated_data.get('tracks_ids'),
which is confusing because the type of track_ids returns is the form of List[Object]. not List[int]

Can you tell me why you made this decision?