All that really matters is that the red and blue wavelengths are far out enough to not overlap with the magenta dye layer on the film or the green channel on the camera sensor.
"sensitivity" or density?
The light source wavelengths don't need to align with the density peaks of the film, they just need to be far enough apart to isolate the individual dye layers and avoid the overlap between the camera sensor channels. Using 700nm for red would be challenging as most digital camera sensors aren't all that sensitive to 700nm.
Author here, I was curious about this too since I would have expected most film scanners from the 90s-2000s to use incandescent light sources if high-CRI light was really the way to go. Minilabs that made direct optical prints to RA-4 paper did use white light sources with filters, since RA-4 paper is already only sensitive to narrow bands of light. In the mid-90s, Fujifilm and others introduced minilabs that could also scan film and produce prints from digital files. These all used RGB LEDs to scan the film, and they must have had a very good reason to since blue LEDs were barely ready for commercial use at the time.
As far as I know, it doesn't have any features disabled but PDF and image exports will have a watermark saying that they are for noncommercial use only.