Many CS programs are accredited by ABET, but they're covered by the Computing Accreditation Commission which doesn't qualify graduates to sit for the FE exam. And many top CS programs, including CMU and Stanford, aren't ABET accredited at all.

Nationwide, there's only 27 Software Engineering programs accredited by ABET. So graduates of those programs could sit for it but until graduates from top programs qualify, no one is going to require it.