Are SAT Subject tests-takers mostly international students?

Is it true that most people taking sat subject tests are international students? If it’s true, does that mean it is advantageous for American students to take the tests? For example, a domestic student taking Math level 2.
(Btw no offense to international students)

Where did you read this?

No

Well, it won’t hurt to take the tests if the college requests them or considers them. If the college does not consider them, then there is no advantage to taking them.