This thread is very interesting, despite all the roughness of it.
I believe there are multiple pathways to reach hypertrophy, each one with its own advantages and limitations.
I moved to a new house 15 days ago and I'm completely out of time to train, many things to adjust. I'm not sure but I think my last session was around 18 days ago. I thought I'd loose a great amount of muscle but lost only some size due to poorer glycogen storage. In fact I seem to have lost much less than I was expecting. I don't appear smaller, but less fuller, like we get when on a cut. I remember some @O&G thoughts on this a few months ago, when he talked about people he met in the past and today were incredibly small, when other were as big as before even without training.
I believe the pathway of growing by getting stronger, focusing on higher %RM, delivers a greater ratio of myofibrillar / sarcoplasmic hypertrophy, thus allowing a more "stable" growth. I remember my early years of lifting when usually I had to stop training for a few days and always lost a great amount of size. At that time I was training with the traditional 8-12 rep range always, because I didn't know other way.
Obviously the ideal path to acquire maximum size is to prime both types of growing, but personally I believe that training for size AND strength has clear advantages, one of them being the "persistency" of gains.
For some people like me is very frustrating to being in an yo-yo trend, so I prefer a slower rate of growth but that this growth come solid and more stable.
There is still zero evidence by way of studies to support the contention that one type of training creates different hypertrophy to another - i.e. no proof of myofibrillar vs sarcoplasmic hypertrophy. Generally speaking, both effects will occur when the load stimulus is sufficient. Is it likely that one is favoured by way of ratio over the other? I would say so.