When I share something (e.g. a paragraph from an article or a link) with Joplin in Android, it always goes to last notebook I used. This adds an overhead of organizing shared items. (sometimes note is lost in an unrelated notebook.) I have two suggestions in my mind and I wanted to learn if one of them is possible before opening an issue in Github.
A setting like "default inbox notebook" to keep shared items in the inbox notebook. (This seems to be suggested before with "Default notebook for sharing" post from @jjocsak)
A setting to decide default behaviour of share action, "create in last notebook" or "ask every time". First option will maintain current behaviour of app and second one gives opportunity to decide notebook when note is created.