I don't think this has something to do with the US government or the SEC. The headline is a little misleading. If I'm not mistaken, this isn't a policy that covers all Chase banks. This is only implemented by Chase UK. The ban, therefore, is exclusive to its British customers.
Yes, as you say, the title is a bit misleading. While reading the topic, I thought that the bank was in America, but it became clear after reading the comments that this decision is specific to the UK only.
In any case, I believe that even if the bank is not located in the United States, all countries and banks adhere to the ban policy imposed by the United States, not only on crypto, but also on companies, countries, and individuals, as you know when the United States imposes sanctions on Cuba, Russia, or Iran every... Countries and banks adhere to the ban.
Same thing here in Crypto, since there is a strict policy by the US towards cryptocurrencies all the banks will be very careful about cryptocurrencies.