Some good tone in that video, and it shows that the aliasing is largely masked depending on what you play, but there is a style of playing that can reveal it... and this isn't it. To me, really milking the notes in a high wailing lead is where it can reveal itself, not during straight riffing.
A few days ago, several people chimed in on this thread with some good ideas on having a switchable option that could direct more dsp to the amp profile—I hope Kemper took note of that.
There isn't a whole lot more to say about the aliasing that hasn't already been said, but this thread will not fade. We are kind of just waiting for Kemper to fix it, since they don't seem to want to chime in directly as to what they are planning.
I agree this style of playing tends to mask it, i notice it especially on higher single note leads with alot of gain , simple test use a high gain profile (gain like 75 percent) , turn on the tube screamer effect block in front of the amp block play the high e string at the 20th fret or 22nd , bend it , pick it again bend , pick it again bend , i hear it then ...