Till date whenever Bitcoin ETF filler was filled to get SEC approval they had 2 main concerns to approve ETF which were :
1 - Lack of global regulatory rules which surrounds crypto and crypto exchanges and we all know Japan and south korea are two major countries which deal max in crypto and they had no regulations earlier but now both have regulation done for there exchanges and have regulation for crypto accepted . So one of the major hurdle is already cleared by now .

2- SEC has shown concern for investors money in case of hacks , private keys lost so what will happen if any of miss happening happened for investors fund ? So for that CBOE has stated that it has secured insurance for the investors and that means the second hurdle which was for ETF approval has also been removed this time around .

So now this filler from CBOE group has it all in it to get approval from SEC as its gives them assurance on things that they asked for and filler from CBOE in itself is big thing as it is one of the biggest and reputable exchange .