Oh, I stand corrected. It does say that. I ctrl-F'ed a version I printed as a PDF for "200", and for some reason that page is blank in my copy.
Still, the question remains, how do you end up with 200 countries? I think even being fully inclusive you only get to about 196.
Ask a Scot or a Welshman which country they live in; neither Scotland nor Wales (or NI or England) are technically countries but all of their inhabitants would claim they were, with separate cultures and identities. So, you are hitting 200 before you start with independent territories such as Puerto Rico, Bermuda etc and semi-autonomous regions like HK and Macau.
But if we are nit-picking this 'factoid' then next stop punctuation.

In Law there are a number of approaches how to define a legal document (i.e. a legislation). One is the "Plain Meaning" also known as the "Literal approach" which means to read a document word-by-word.
In most courts today the "Purposive Approach" is used which looks at the purpose of what it is intended. I will not give a law lesson but I will use the Purposive Approach to decode what "200 countries" would mean (if the approach was used).
"...This service will provide increased accessibility to crypto-currencies worldwide, which would include China..."
As the number of countries in the world is debated, it was logical to round up to 200 countries...but that's just my opinion