Sure but even still, suppose an analyst saves all of Fidelity's clients 1M in two days worth of work. We can't dismiss that as silly because that savings is so small compared to 5 trillion AUM, right?
I'd also like someone who understands the issue well to let us know whether these mark downs have any tax implications to begin with. I think it might sometimes be the case that marking down such a holding would allow recognition of a tax loss but I don't think that is going on here.