TL/DR  
 
There's a huge difference in the way your original article reads "police don't have to protect you" and what that actual court decision stated and upheld.  Which was providing police the discretion to do their jobs instead of being shoehorned into having to make arrests regardless of the circumstances.
I'm not sure what the link you provided is trying to prove.  That people should protect themselves?  Okay, I agree.  Anti-gun control?  All aboard the awesome train.
Griping about police getting protections from lawsuits for not protecting the individual?  I disagree, especially when you consider how lawsuit happy our society is today.  "I'm suing Anytown Police Department because I got robbed and they failed to catch the offender in the act when I dialed 911."  Which is basically what those protections guarantee against.  Not that they have to protect you.  But rather protected themselves because the police can't be everywhere at the same time as you stated.  And his examples, just like many on here, are limited in nature and certainly not the norm.
That article is a bit dated though since I'm not sure why someone would want to steal my VCR.  Anyway...
I agree with the premise of the concept that people should be (and in truth are) responsible for their initial protection.  But being that the gun control concept is losing ground for the most part (except in selected locations) it's hard to say he is entirely accurate sixteen years down the road from when he wrote that.  And in truth many cops, dare I say a majority of them, would give the same advice to "buy a gun, buy a dog" for those under immediate threat.