Sort-of, but no, because code points are not characters.

There's a big difference between "get the 5th code point" and "get the 5th character".

Because multiple code points can be used in a single character, it not possible to do random-character-access in a unicode-encoded string.

No, it's impossible to do random access to retrieve a character, if you are dealing with code points, because code points do not have a fixed byte size. I thought this a good intro <https://tonsky.me/blog/unicode/>.