In my opinion the bench in the original post is too solid for electronics.
I know nobody likes a wobbly workbench, but with smart cross bracing much skinnier designs can be made solid. Where you would want such a heavily built workbench is for a workshop where you might hammer stuff on it, put a vise on it etc. For that a thick heavy bench is great since it will stay in place under those large forces.
But electronics benches are different. You don't hammer or saw things on those. What you want there instead is lots of space. Not only for any project that grows big but also room around the project to put down components and tools as you are working on it. On top of all this you also want your test equipment on your bench so that its at hand when you need to use it. While some of the new modern oscilloscopes take up a lot less space with there slimmer design, but bigger test equipment soon starts to pile up on it (Especially true if you buy old 20 year old test gear off ebay to get high performance stuff on the cheap). If you have a typical 60cm deep workbench and you put some 40cm power supply on it you are left with only 20cm of actual bench area to use as a bench!
To solve this you want your bench to be as deep as possible, about 1m (3ft) is useful, or you can put shelves behind your bench like Dave has in his lab. That way you can place test equipment on the shelf to get back your bench space. The shelves also are a great place to hold the stuff you often need, right in the reach of your hand. Good place to keep general tools, soldering consumables, a set of common resistor/cap values, test cables, probes etc.
Its also a good idea to have some general storage space near by in the form of a closet or shelving to store all your components and projects you are not working on.