At this point I'm not even sure I'm the target audience. When I started my playthrough this morning, my first reaction on seeing the opening walljump bits was "okay, this is going to be long, but that's to be expected", and was starting to worry I might not have enough to talk about to keep the stream audience entertained. When I finished it, but accidentally ended before going back and using Heruka dash, I thought "crap, I have to go through that again?" but I did (obviously somewhat faster that time), but I couldn't find the scribble cat fight on stream (didn't realize the way at the time) and left the stream at 99.5%.
I didn't want to do it again right then, but I couldn't get it out of my head, so I spent another 30 minutes or so getting back through the 2 major fights, and kinda dreading it again (though, as per Indivisible, each subsequent time I found ways to optimize), and then found Scribblecat. I spent an hour trying, but got so frustrated my housemate demanded I take a break. At this point the thought of going through the process to even attempt Scribblecat again is not something I want to consider, as for whatever reason I'm viewing the fights along the way as obstacles to be optimized away rather than interesting engagements in their own rights.
I don't know, maybe with a proper learning curve and save/load system the "I guess I need to optimize my way through these" fights will be far less prevalent, and there will be more engaging fights that aren't as full of cheese as a dairy farmer's cold storage, so maybe my interest curve won't go from bored on autopilot to "good-God-how-the-hell-does-any-human-being-manage-to-deal-with-that?!!" in the span of one fight.