we praise people who build, but we neglect to shame the lazy gamers

I can't help wondering where you got this idea. The mainstream absolutely shames lazy gamers; they're one of the few groups that it's socially acceptable to shame without reservation, even more so than other subcultures seen as socially unproductive (e.g. stoner, hippie, dropout) because their escape of choice still carries a childish stigma. That's countered somewhat by an expectation of somewhat higher social class, but the "mom's basement" stereotype is alive and well.

Even other lazy gamers often shame lazy gamers, although that's balanced (for some value of "balance") by a lot of back-patting; nerd culture of all stripes has a strong self-love/self-hate thing going on.