To begin with, I'm very sorry that Mr. Chavez is paralyzed from the waist down, I wouldn't wish that on anyone.
And I understand that legal types, especially people who don't know firearms, would question whether a particular handgun (in this case, a Glock, but it could have been a S&W M&P), includes "adequate safeguards" (whatever that means; I expect the legal wrangling will add some level of legal definition to the meaning of "adequate safeguards").
But as others have posted, when it all shakes out, I fully expect that the design of Glock SafeAction pistols will not be found to be the primary, or secondary, or even tertiary cause of Chavez's injuries. Glocks are what they are, firearms, and can only be rendered safe when unloaded, locked, and out of reach of three-year-olds.
But the suggestion that the inclination to blame others for personal misfortunes is hardly the exclusive domain of liberals, from CA,IL, WI, or anywhere else (well, maybe from WI, 'cause we all know. How Wisconsin people are, lol).
Conservative pundits from Fox News and other conservative leaning news organizations regularly blame "the liberal MSM" for all kinds of woes, and Sarah Palin has carved out a career of complaining about how liberals regularly make her look foolish, nevermind that she digs her own holes with regularity. The unfortunate fact is that the tendency to blame others has become pervasive throughout our society, to the discredit of the society at large.
As a generally liberal guy, I'm particularly big on the concept of personal responsibility, which is why I work multiple jobs to stay afloat & keep my guns (including a Glock 22) unloaded & locked. In the end, Chavez has no one to blame for his misfortune but himself, and no amount of safety redesign can prevent a loaded firearm from being "accidentally" discharged.