Your ETF fund manager can buy and sell within an ETF structure, tax free. This beats any high turnover tax loss strategy.
Wouldn't that be a wash sale, and thus fraud to claim the loss as a tax deduction?
Buying the same asset under a different name (say, packaged under a different ticker on another exchange) would be a wash share.
Buying a truly different underlying asset in the same sector/region which has 99.9% correlation with the original asset you held would not be a wash sale.
I think that's either an exaggeration or exceedingly rare.
I am suggesting that that benefit is far superior than any tax harvesting if you are directly indexed, etc...