You should have posted a link to back your claim, like this one for an example:
The US leads countries ready for widespread crypto adoption
Not that USA is leading global bitcoin adoption, but it's more
likely USA will lead global bitcoin adoption due to some factors observed by specialists, like the one you mentioned about they having more ATMs per citizen than another countries. Another factor is that bitcoin uptake by americans is above average when compared to another countries. And of course, they have decent internet connection probably disponible for its whole territory, what makes the process of dealing with bitcoin a lot easier.
This is not proof this is speculation by specialists instead of data that we can verify. They have made a fancy graph without backing up their claims and providing the article that you gave has not solidified the claims any more than the OP was claiming. I want to see actual data and how they conducted the survey to get these results. I am not claiming that the US is not leading the race but I have my doubts in the survey that is in chart form here because I would expect other major countries to be higher on the list. The USA being a large country is going to be one of the highest and because the US does not have the problems that the middle east have they will have better access to the internet etc and they will always be high on the list but I would expect China to be higher before the bans that were announced.