I don't think that accommodations should be noted on score sends, but over-diagnosis is definitely an issue. For kids who are legitimately 2e, discrimination arising from the practice of "score flagging" would serve only to depress college decisions to a level below that commensurate with reasoning ability and knowledge, which the SAT and ACT are designed to measure. Although time limits exist, these tests are not primarily intended to assess processing speed. Many studies, including one by College Board itself, suggest extremely minimal (on the order of 10 points on the SAT) score improvements for those who do not have a reasoning/PS discrepancy. And in an era when many colleges are willing to accommodate demands for additional time, the practice would seem not only unethical, but also superfluous.
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"The thing that doesn't fit is the most interesting."
-Richard Feynman