What I REALLY don't get is, Why does he even care? So what if projects are giving out credit at different rates for WUs.
I can only surmise, he has a vested interest in something and that changing the credit scheme is the only way to get to whatever it is he's striving for.
With that in mind, perhaps it's something like, he has a particular fondness for a project or two, or more even, that no one, or very few are actually crunching and that the reason no one is crunching them is because the credit is so low, no one wants to. This leaves him only one way to get his pet projects running again and that would be to lower the credit on everything else to the level of his pet projects. This way, it won't matter that people flock to Collatz, MW or PG any more, because he's managed to nerf them to get people to look in other directions.

I can see no other reason why he should care so much about it.