This looks like heading to a direction, which I've already tried to sketch :
While I share the concerns of (directly) supporting PoW (because of the "waste" of energy) I tend to rely on the voting mechanism of Nu
I might dislike supporting PoW, but I'm aware that any money and any business that might be attracted by Nu will have some drawbacks of one kind or another.
...even if one simply invests money in Nu, you need to ask where that money comes from and how it has gotten into the hands of the investor, to be fair...
Stating the obvious I could say that I think people tend to stop asking questions after some degree. So the more obvious something is, the more it will be recognized and regarded.
PoW is an obvious aspect of this business.
Having a business with public faces that is interested to work together with Nu in some way is yet another aspect.
Whether or not the Nu shareholders want to make business based on these terms will ultimately be decided by a vote once this proposal is beyond draft status.