Google UI seemingly is optimized for happy path cases. Search for the obvious word and click a relevant link on the screen which appears. Write a single response to a single email and abandon than conversation afterwards, always use new conversations for every new email. Click a recommended video thumbnail on the frontpage and then continue with autoplay. Put only short defined text type in the cells of a spreadsheet, like date/number/text etc. And so on with all of their products.

But as soon as user tries to search for something no on the first page, or reply to a 10-20+ message thread with attachments in history, or tries to use playlists or search in YT, or input a slightly more complex data in the sheet cells - then all hell breaks loose.

Just the latest Google thing I've experienced - a default system Watch Later playlist is now hidden on Android. It's gone, no traces, no way to search for it. The only remnant of it is a 2-second popup after adding a new video to Watch Later, you can press "view" and then see it. Meanwhile it is still present as a separate item on PC. I'm writing this eaxmple because that was deliberate, that was no error or regression. Someone created a Jira for that and someone resolved it.