So, what is the reasoning behind Shaco's nerfs?

Okay, since people just read Shaco in the title and proceed to downvote: ** I'm not complaining about AP scaling nerfs - those were somewhat justified. I'm asking about additional ones which do not fit the reasoning they've given for nerfing him at all. ** Justification given is the following:

Shaco’s burst damage is too high - especially AP Shaco's. It’s one thing to have a high-damage >combo, but Shaco’s ability to murder from stealth doesn’t give opponents enough time to react.

Ok, so you reduce AP scalings. That goes in line with what you said and it's fine. Then you further reduce his AD scalings, despite AD Shaco being complete shit. Yes, AP Shaco builds Gunblade. He wil lose a whooping 4 damage to his E. That totally justifies further trashing of AD Shaco. Then you cut his ultimate's base damage by one third - despite it having absolutely zero effect on his ability to murder from stealth. Meanwhile Lee gets lighter nerfs to his point-and-click AoE hard CC nuke than Shaco gets to probably the most situational damage ult in game - if you get killed by it, you deserved it.

So, is there any justification to this set of nerfs other than "Fuck you, Shaco players. We don't want you playing your champion - go play Lee or something like that"?