I doubt it. The jailbreak/decryption technique they used to get the IPA files was for iOS 5.1 on a 3GS. There are undoubtedly newer techniques, but actually maintaining and grabbing app files is non-trivial. And any centralized repository is instantly targeted, so you have a seedy app underground of stuff that probably isn't even current.
Then you have the fact that there is 40% overhead on Android to replicate the iOS experience. And the fact that the bluetooth and GPS components won't work.
So do you really think people will buy cheap tablets, spend time installing some hack to run older apps and then get subpar performance, just so they can have access to ios apps? Won't happen. A small sector of users might be willing to do this, but definitely not enough to disrupt anything.
I mean, this is considerably more complex than a hackintosh and we all saw how those projects just totally destroyed Apple's Mac sales. Oh, wait...
If it's anything like the hackintosh market, this could help iOS device sales if people tried and liked the iOS apps they could get on Android. Plenty of us who had a hackintosh (myself only in a virtual machine, but still) ended up switching to the Mac after trying out OS X that way.
I wonder if this will open the floodgates for ios piracy hosted on android.
Could you buy a cheap noname android tablet and install a pirated full ios OS environment + apps?
A hassle-free, always-jailbreakable "hackintosh" of ios that is cheaper than the original could a disruptive thing.