for me it was a big problem. I love my Machinedrum, but the red LED backlight of the original screen gave me headaches just by looking at it for a few minutes.
I replaced it with a white one (similar to Monomachine/Octatrack etc. )
Another thing I should mention, is, that on my older Machinedrum, the red LEDs, which are used for the steps in the sequencer and also showing the played drums, are way too bright for my eyes. I noticed that Elektron uses less bright / more matte ones for their more recent machines. My quite new Monomachine is just nice in that regard!