Don't come telling me how "superior" command lines are - they aren't; what they are is "different".
But reality does not change to suit the preferences of the observer. Keyboard commands are demonstrably faster. Imagine that we are both typing away in a document and the time comes to save it. I go for Ctrl-S whereas you reach for the mouse to click the save button on the toolbar. I've issued my command and the document has been saved before your hand has come to rest on the mouse, yet alone you've steered the pointer to the correct button.
Sure, you don't need to know every command, but even the most frequent 5-10 save a lot of time by themselves - cut, copy, paste, save, close, print. Those tend to be the same across many applications. In any event the claims about the apps you run are clearly bull - you do have apps you used frequently. Is it less than six months since you last accessed a web site? If it is that claim is a lie - even if you used a different browser each time you would rapidly run out of web browsers within the once in a blue moon time frame.