A technical leader's technical experience should be so intimidating on its own that he should be putting in appropriate effort to reduce the natural fear that is common among reports as well as superiors.

Alternatively someone who cultivates fear does not have the characteristics of a leader at all. Certainly not a "fearless leader".

The most meaningful love for a leader can only be developed over the long term, and is an overall admiration gained after recognition that things under that leader are better than they would be otherwise.