How could I rewrite this mv recreation in fd?

[hownioni]

The code in question is here. You call the command and provide the full paths to files or folders, then it moves and merges them with your current directory (It's done this way because it's for use with the terminal file manager lf).
It works in find but since I also want it to be fast I want to rewrite it in fd. Can it be done? Is it worth the hassle?