My car has plenty of smarts, including a drive by wire system and *gasp* an electronic key that ensures that only I can operate it. This does introduce some new failure mode, but *overall* I am safer and more likely to get where I am going because of all this technology.
If done right, a smart gun can be actually more reliable and accurate while simultaneously reducing accidents. For example, it can have a screen that shows me where a bullet will hit and how many remain in the magazine. It can have redundant ways of unlocking, including a physical key if the battery runs out.
As for government disabling guns, they can already send a SWAT team in bulletproof vests and shred you to pieces. The only difference is that you and innocent bystanders around you are more likely to survive. Plus, we are talking smart, not internet connected.