Use HSL - desaturate red.
Note: some reds are more orange than red, so you may have to desaturate some orange too, ditto for magenta.
You can remove Red from a photo but you cannot remove the red channel from colors which is what is happening in the eye when it has a defect in the long-wavelength pigment. In other words for a red colorblindness both red and green look yellowish, not red is a shade of gray.
Basically human eyes have detectors for three colors in the long, medium and short wavelengths of visible light, red, green and blue, if you like. And defects in how much of each of those pigments or the entire lack of one or more of the pigments can affect how things look, but none of the scenarios involve removing a color range like LR does or you’re proposing, only removing one or more color channels, which is something you can do in Photoshop, not Lightroom.
Here is a page that shows how things look and has links to other pages: