Blackrock's record is 575-1 regarding ETF filings, why was the 1 denied?

So I was interested in the 575 to 1 statistic I saw popping up everywhere.
Awesome that a company with this good of a track record is filing for a BTC ETF but why was the single one denied? Maybe this says something about the new filing theyre doing.

Apparently the reason is that they tried something new "The proposals seek permission to create actively managed ETFs that would not be required to disclose their holdings on a daily basis.
Firms say these so-called “non-transparent” ETFs will allow them to use sophisticated investment strategies without revealing the fund manager’s moves. "

They wanted an ETF that kept the holdings secret for months. Since all ETF's have to disclose their holdings every day this was not allowed. Basically they knew this was against the rules and filed it anyway (maybe to set a new pecedent?).

Knowing this I wouldnt realy call this an L on their record since they probably went in knowing it would fail due to the SEC's rules. This gives me more confidence that Blackrock wouldnt file for a spot ETF if they didnt have enough power of rulemakers didnt think it would pass.

Source: UPDATE 1-U.S. SEC plans to deny proposals for "non-transparent" ETFs | Reuters