They don't necessarily depend on the EDGES result holding up, but may be to confirm/refute it. Even if your experiment refutes EDGES, you don't want to imply ED

They don't necessarily depend on the EDGES result holding up, but may be to confirm/refute it. Even if your experiment refutes EDGES, you don't want to imply EDGES was utter bunk from the start, because if that was so why did you spend so much money bothering to test it? Your funding and project still depends on it having some credibility.