Well, true...sheeple are everywhere. I'm not one of them.This is all well and good but pretty useless advice when one has other Apple kit. For example, updating the Apple Watch to 4.3 is a no-no under iOS 10.x (at least that's my presumption since I can't even do that with 11.2.5!). When I got High Sierra on my MacBook I had to also have the latest WatchOS on my watches.
So, in isolation fine - nice idea if you can do it, in reality, when one has the ecosystem, one finds oneself hamstrung...