I mostly work in vim via ssh--occasionally inside a tmux session. Vim "paste mode", X11 selection, and OSC52 are built-in & have all my bases covered. I think this person is engaged in Rube Goldberg style procrastination.
OSC52 works for me in nested tmux sessions over SSH, and in TUI Emacs. Like that article mentioned, you need to explicitly tell tmux that your terminal supports OSC52.
https://www.sobyte.net/post/2022-01/vim-copy-over-ssh/