Look, to be fair to Micah, some players need time to adjust to the PSL and the South African conditions in general. Firstly the PSL is generally not a high scoring league. Its just not. Last year was the first time a player scored more than 15 goals in the league since 2011/2012 season. It's much easier for a defender to adjust than a midfielder or striker. Topography (sea level to 1700 m in Joburg) could also be an issue. There is a reason why the All Blacks are mostly brought to the Highveld. The hard ground and some of the away playing fields are a challenge. Playing style is very different with players holding on to the ball a little to long in my opinion. Finally his got three experience players infront of him that are doing the job for the team in Kutumela, Moseamedi and Kunene.
With all that, I think the coach has been very fair to him. Bringing him in as a second half replacement to run at tired defenders is playing to Micah's strenghts. He has had a few decent opportunities he hasn't put away. He also needs to quickly adjusted to the pace of the game here. It is fast with most players having Micah's pace. I also think he needs to bring more variation to his game. If running at the defenders is not working he needs to go on the outside and deliver quality crosses. Its an area he definitely can learn from Dan Morgan. Lastly his defensive side to his game needs work.
Its not all doom and gloom for Micah though, even though I sound like the grim reaper above (lol),he just needs a goal. Like every struggling forward a goal is the viagra he needs to push on. His getting field time which is more than can be said for other players in the squad.