Friction is anything that gets in the way of a user performing an action. For example, if you have to open and navigate through several menus to find the privacy settings, that is significant friction. Or if one of the buttons has a bug and doesn’t work when you press it, so you have to find another way of performing that action, which is significant friction.
This part of the reading reminds me of tiktok. When you want to create a video instead of simple editing tools you have to use greenscreen filters, or other modes and such to make a good tiktok video, like overrall they don't have simple tools and options to use, you literally have to go through different methods.