Since you guessed it instead of somehow measured it (i think you'd need a very high framerate camera to measure the time between click and app appearing to do that) perhaps it isn't that it is fast but you're just not sensitive to such small delays?
Possibly. Maybe I remember the 'good old days' too fondly: where opening any kind of application would take upwards of 5 seconds and often into the minutes for something large like Word :)
For me anything that loads before I even have the time to think about the fact that it's loading would not be considered 'slow'.
It opens much faster the second time of the day, but the first time is always over a few seconds. I'm probably including the slow feeling the Start menu obtained a few versions ago, I don't use it enough to pin it to the taskbar.
The rating thing was real at some point, they might have removed it by now.
My point is, important things are getting noticeably slower for almost zero gain, even though the machines have gotten WAY faster. Something is not right.
How slow is it on your machine?? I've also not had it ask me to rate it on the store. I don't think it even exists on the store.