I don’t know, nothing struck me as new, the only difference is the presentation and the mouse (but I prefer keyboard). the example given for animated indicators already exists using ASCII escape codes. my zsh already has syntax highlighting on the prompt indicating mistyped commands, and suggest possible completions with a tui (with vim bindings). I could go on but anyway my point is everything they show is already possible with a tui, the only reason a clicky clicky solution doesn’t exist is because keyboard are freakin better and faster. They are right that we need a terminal evolution/revolution, but it’s not the mouse.
OK I had the same problem as you and found the solution in dvdbackup + mkvtoolnix + some scripting glue + [optional step: ffmpeg/handbrake for transcoding]. My solution works but is not optimal but it works using only libre software. I’m writing a page on my website to document this libre dvd ripping setup, it is very much in progress but I will be improving it as I go, hence I prefer to point you to the page.
I had to dig around on the makemkv forum to find the source code: https://forum.makemkv.com/forum/viewtopic.php?f=3&t=224 but I have no idea how recent that is and the developpers are only giving the minimum source out of obligation from the GPL. They litteraly wrote “GPL is cancer” in their source code. This, plus the fact that there was no clear link to the source code and that it’s distributed as a tar (couldn’t find a git repo) really stinks.