If you eve see something in a video tutorial that does not exist on the current release of the software, it simply means that the user interface has changed. Be assured, though, that I never remove any functionality unless it is meaningless. The change were made to simplify the user interface. For example, at one time, it was necessary to click the 'kerfs' button to have the software display where the kerfs should be for making the cuts for the next generation. Now, I always show four representative saw kerfs so there is no reason to have that button anymore.
The last significant release I made was totally for simplification purposes - to benefit the user but the greater reason was to simplify the logic behind the code. Redundant buttons move the decimal over as to the complexity of the code and so I looked for opportunities to remove redundant buttons. For example, there used to be two ways to select Flip, Flop, Incline and Decline. By removing the redundancy, I was able to remove over 500 lines of code. When you are both the designer, coder and software debugger, it is always a good thing if you can simplify the code.