I didn't say an IR is just about tracking +/- 5° though, did I? Nope, I just checked...
This guy is training for the IR and I was sharing my personal experience of the process in order to provide encouragement. He's probably not going to need to de-ice or worry about slot times. If you did your initial IR in a heavy jet in IMC in icing conditions whilst single pilot - you've got my respect and admiration.
Comparing the Single Pilot IR to something he's more familiar with - flying a VFR light aircraft - it is arguably easier in many respects, Nav, comms and airspace spring to mind. My post was intended to encourage the OP, not undermine other airline pilots.