I know that but since it is essential for just about everything you do, hiding and revealing it is a total pain. Pages sensibly had a small tabbed inspector which could be tucked in any free space, in my case a second palette monitor, and the tabs could be separated. Crazy stuff, merely tested to work for 30 years and didn't eat up the tiny screens on laptops, that Apple presumes we all use.
There is nothing worse for productivity and accuracy to having your view of your work semi-visible, obstructed or interrupted regularly.
...and as to the later, I call B.S. Apple does what it wants to do irregardless of what we think or say. Once Apple decides, it is almost impossible to change it's mind, no matter how carefully detailed or reasoned the explanations. It doesn't listen it tells you how you have got it wrong. If you persist in your stupidity, it will simply stop talking to you, and that folks is how it learns very little.
I have always found it enormously ironic that Apple portrayed itself as the girl with the sledge hammer in the original Mac launch advertisement, when in reality it is the shadowy leader up on the big screen, communicating only in dogmatic, cryptic and ludicrously self-contradictory revelations to its humble followers gathered below.
Speaking of which the humble masses are being gathered as we speak.
Peter
PS A constant reminder to me is the abominable Spill Chucker that I am constantly fighting as I type, that works overtime to convert my accurate text into Apple gibberish.