I think p_bywater389214's post is one of the most refreshingly accurate posts about the use of extensions to help with development.
I would like to see it referenced in all the marketing that WA puts out about their products. It would remove the implication that the extensions are going to do absolutely everything for you, and solve all your problems.
Even with the extensions there is going to be a learning curve, but the point that WA should be making is that their extensions and solutions will give you a huge leg-up in this process.
The extensions are great, I don't know how I did without them - but they don't and can't do it all, - I still have to invest my own time and energy in the learning process but with the help of these products, it's just so much easier.