Young man I am an iOS, Android, Windows and *Nix developer with 28 years of experience. My last project brought in over $12 million US and counting. So it would be better to assume, for your sake, I know more than you ever will on the subject matter of software development. With that in mind.
The issue I was referring to has ZERO to do with applications or the OS crashing. In fact the issue is caused by everything working as designed under AOSP (Android Open Source Project). You can take any off the shelf STOCK Android phone and install applications from the Google Play Market. If you install enough applications that have triggered events and should you trigger an event that has too many apps tied to it at the same exact time as a call or SMS/MMS is incoming, Android will miss the initial event being raised by the cellular radio. If you are lucky, that will only cause the custom ringtone associated with the contact to be missed and it plays the default ringtone (which is always loaded in memory) or if you aren't so lucky, the CPU stays so busy that the cellular radio simply times out and you miss the event completely.
Example: There are a thousands of apps that are tied to the "On Change Connection" event for when you switch from the cellular data to WiFi data. EBay's application is a classic example of this. When you leave your house and are no longer in WiFi range, Android signals all apps tied to that event that it should run their code to deal with the change in data stream. Now imagine if someone has 100 apps like that because they think they are cool apps. Eventually the CPU will be overloaded with work when that event is triggered. At the same time, a call comes in. CPU is so busy handling those 100 apps it can't make a time slice for the cellular radio available instantly. And there in lies the beginning of the failure.
Android 1.6 thru 2.3.4 had major issues with this situation, especially on single core CPUs. They tried to correct it with 3.x and failed. Android 4.x is doing a much better job, but you still need a quad core CPU to deal with the situation properly every time. Where as with iOS, you only need a single core CPU and it never happens.
You are welcome. I just saved you 18 months of research and hands on testing of the AOSP code base.
Piece of advice for the future. Do some actual research before you decide to blast someone with a quote from some blog that doesn't have a damn thing to do with actual the statement that was made.