Lots of funny comments there. "Bitcoin they can control. Hell, they can even pull the plug. Blah blah Blockchain"

It's basically an ETF with no expense ratio, despite having a professional custodian. GBTC charges 2%. Even when a Bitcoin ETF does get approved, it'll probably be in the 0.5%-1% range (wild guess). GLD, the largest physically-backed gold ETF, charges 0.4%.
I can see the appeal.
Might incentivize others to do similar things. This amount of interest in an unsaturated market is practically begging to be captured, even if corporate bodies are concerned primarily with the bottom line.