This video is not about "whether" you should buy a monitor arm. It's about how you get the best out of a monitor arm or screen mount.
We think that it is the first ergonomic tool you should be getting. More important than a stand sit desk. If you've got $200 to spend on your workspace - this is where it should go...
When you are first setting up your monitor arm make sure it is positioned at the right height. This may sound easy but it isn't always. Sometimes the adjustable tightening isn't completely intuitive.
My suggestion is to set it tight rather than too loose. There is nothing worse than the screen sagging or falling forward on the arm. Our monitor arms feel quite stiff when you are first adjusting them for height but this is by design. You want them stiffer rather than soft because you will (in general) only set the height of the arm once. You may tilt it forward or sideways in it's daily use but you won't set the height very often unless you have multiple people using it.
Make sure when setting the height that you have it at eye level to the top of the screen. This is what is considered the ergonomical ideal. You can adjust it later but that is what is considered the optimal height.
Make sure you use the cable management tools that come with the monitor arm. Ours are pretty simple. It involves a clip that you use to secure the hdmi/power cable to the stem of the screen mount. You run the cabling down the arm and the clip attaches it to the stem. It doesn't need to be more complicated than this.
Final tip - don't overscrew the screws into the back of the screen. If you screw them too tight you run the risk of ripping the thread out of the back of the screen and once this happens you won't be able to fix anything to .