Under EBT, crews must demonstrate and instructors must accurately assess eight competencies. The three most relevant to SERA are communication, situational awareness, and workload management.
Traditional flight training requires the instructor to role-play all pilot interactions with air traffic control (ATC). How is the instructor supposed to focus on assessing pilot performance while they are distracted with a performance of their own?
Traditional flight training involves one aircraft, one crew, and one or more instructor(s). Nobody else is in the mix. With an empty airport and no other aircraft or pilots in the simulation, how can instructors gauge situational awareness? There is no "situation" that requires awareness.
Traditional flight training is missing the critical communications and situational awareness elements. How can instructors accurately measure workload management in the absence of a full pilot workload?
The answer to these deficiencies is simple. Add SERA to the simulation, and these three competencies become a natural element of any pilot assessment.