do you think financial institution would go through the hassle of giving their share holders their owned value of the second chain?

I think it would have been better if their terms would say the value of any potential Fork is added to the total ETF. I get they don't want to deal with each worthless Fork. I can create Bitcoin LV (Loyce Vision) today and nobody cares. That's okay. But if a Fork has value, they should not just choose the most valuable Fork, they should sell the other Forks and pay dividend to the ETF holders.
Then again, I also get that this could become complicated: what if Bitcoin LV is initially worthless, but after 2 years it's worth $42. That would mean they can still sell the Fork, but the ETF holders at that moment are different than the ETF holders during Fork days. So distributing the dividend to the right people is complicated.