Yeah, basically no successful American social media company advertises itself as being American. And its users do not think of it as "an American company," they just think of it as its own thing.
There was a map some time ago about who had what connections on the regional, country, and EU level. Iirc EU was almost never number one, but got quite a few second places.
France pushes its SecNumCloud standard for critical infrastructure or handling of critical data (ex: health) through law. So, this may not be about pride, but the result is similar.
No one uses social media networks because they care about the quality of the platform. They use them to stay connected with friends and family, to meet new people, or to be entertained.
Very different use cases.