My critique as a designer is that no typographic measure has been added (eg max-width), so it’s very hard to read.

I’d suggest to them that they make a column in the middle for the text that is around 40 characters wide and Lee text flow in that.

This is used by many text editions for their distraction free mode. It’d add more typographic ‘white space’ around the outside also, contributing to the calm and focussed intentions.