@Jimxenus You might be interested in this topic, as it does a decent job of discussing some of the features and shortcomings of other home automation platforms.
My sense from following the discussion is that ST is better at integrating a wider range of devices with its multiple radios and the open(ish) nature of the platform with the very active community here. At least in theory. The instability most of us are suffering through is probably partly due to that added complexity. Maybe ST is also just doing a bad job of it all. Probably some of both.
Having said all that, I have some of the devices you’ve mentioned failing repeatedly (GE link bulbs, Iris motion sensor), and my experience hasn’t been anything like as bad as what you describe for most of the time I’ve had a ST hub (since last summer).