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Let S be a finite generating set of the mapping class group of a finite-type hyperbolic surface. We show that mapping classes supported on a fixed subsurface are not generic in the word metric with respect to S. We also show that pseudo-Anosov mapping classes are generic in the word metric with respect to S', where S' is S plus a single mapping class. We also observe the analogous results for well-behaved hierarchically hyperbolic groups and groups quasi-isometric to them. This gives a version of quasi-isometry invariant theory of counting group elements in groups.
Inhyeok Choi (Thu,) studied this question.