Using Fcitx on Linux, any Unicode character can be typed using the hotkey for the Unicode addon [1] and typing the description. So if you ever need the "arabic ligature bismillah ar-rahman ar-raheem" (﷽), it's right at your fingertips!
Unicode governs standardization of the character set and related things like algorithms. That is, they are not involved in anything that relates to fonts, input methods, or other more user-facing things.
I am learning to read a new language- urdu. My goal is to read some old hand-written documents so I can't copy-paste the characters. But I can easily draw them and confirm my reading. This is perfect for this purpose.
[1] https://fcitx-im.org/wiki/Unicode