I tried several times more. The general observations are summarized below:
1) For such a Address Locator that was generated based on a Polyline M FC, using the Geocode Address tool can't geometrically create points since the Key field selected is for line feature definition.
2) The Display Route Events can be applied for either point or line event feature class generation. For the scenario for point event FC, the Measure field selected can be either From_Measure or To_Measure, which defines a point. For the scenario for line event FC, the Measure fields selected are both From_Measure or To_Measure, which defines a segment.
If you have different observations, please share. Thanks.