I think your argumentation since long has been tiring in its predictability, and this is of course the reason of some ironic comments from other posters. The fact is, that how much "expression" musicians put in their work is a question of temper and musical aesthetics, and the technical perfection is just the prerequisite for them to be able to apply the degree of expressiveness they want. And a more restrained expression is not by itself inexpressive as you seem to presuppose. In fact, I think very few musicians can be called truly inexpressive in your sense.And if the technical perfection is pursued as an end in itself, particularly if it's to draw attention to itself so as to impress the audience with the performer's technical skill, yes it is absolutely antithetical. This is why people will often delineate between performances that use virtuosity merely as an end to impress vs those that use it "in service to the music." The latter recognizes a deeper meaning in the music to which technique is subservient.