It was pretty cool when I tried it on my personal machine. Only annoyance was that it would sometimes generate something I knew was wrong, but my auto-complete muscle memory would use it anyways.
My work machine is pretty underpowered though, so I get suggestions probably less than 1 in 100 times.
Same thing on my project. Thousands of lines across a few dozen files copied 100+ times. At that point there’s almost no going back with everything diverging so long ago.