There is a colourblind friendly colour option that you can enable in the site footer

The boxes have (weak) stripes. But screenshots of a webpage are missing all accessibility features, so links to the actual caniuse.com articles would be helpful.

I don't understand how e.g. reddit allows text-as-images when that is discriminatory for people with eyesight issues.

I don't understand how any website allows images when they are discriminatory for people with eyesight issues. /s

> I'm red/green colorblind and cannot for the life of me tell the boxes apart

You can change the box colors at the bottom of the site :)

I'm on a B&W grayscale e-ink device ... and I feel your pain.