Vidly: 21- Sorting- Rendering cell content

Hi! I got a bit too confused with this video, especially when Mosh creates the rendering cell method. I think there is a bit too much going on for me to catch up. Any simplified explanations?

![|400x225](upload://sMCcOK9czqsbtpAzr95lRr4C0gI.jpeg)

21- Sorting- Rendering Cell Content | Code with Mosh