Taking pride in your work makes your labor more expensive than that of someone who does not do this, so over time as "efficiency" increases, you will eventually be removed and replaced by someone without these compunctions. Taking no pride in your work is economically rational and maximizes your long-term value to capital.
Economically rational, but bereft of identity or _soul_ -- which, paradoxically, becomes highly valued when economically rational agents all regress to a mean of mediocrity.
Valued by the worker to give meaning and quality of life not by the buyer - so it does carry much weight.