Any disadvantage to taking SAT as a 9th Grader?

Yeah, I was wrong about that. I just thought a covid rule was a permanent thing, when it was not.
I still think there is no harm taking the SAT as a freshman. It’s a good experience to have. I took my first SAT May of somphmore year (got 1260) and it was a low stakes experience to help me learn when it is like. Then I built my score to 1480 in a couple more attempts after that one using the data from that first test. Got into all great schools. No harm in taking it early unless time and money are a concern, of course.