Disable Adobe 'AI' Assistant
In case anyone else finally got annoyed enough like me to google How To, here's how you disable the Adobe Reader 'AI' Assistant:
Assuming you are on the 'new' layout of Adobe, you probably need to go to the upper left corner > click FILE > click VIEW> and in the View menu you will see (highlighted in blue above) the words DISABLE new Acrobat Reader. Click it and it should ask you to restart the program.
Once you are back on the default layout, the View menu becomes separated from the File menu as you can see above, and the option turns into 'Enable'.
Enjoy the cleaner, better, more intuitive layout and how Adobe was intended to be used by disabling the 'AI'.
Thanks to Reddit for the info: LINK