No … it doesn’t.

It uses a variety of methods, including empirical measurement of performance in ‘lab’ conditions, but those conditions need not take place in a lab but simply under controlled conditions — a lab is not always the best place to determine performance and is not, therefore, always used in order to gather ‘lab’ data.

Moreover, Ethnomethodology has long been used in psychological studies too.

The very ‘ethological’ approach you espouse here has long been in use in the field of Psychology.

Yes, it has a legacy of the top-down approach, but what field doesn’t?

But the discipline has long since moved beyond the 1950s and Behaviorism.