Update:
Mostly inspired by this thread I have bought an E-Ink tablet . The Boox note air 4c.
I had to become a mini expert on e inks but I think I made the right decision.
I've even using it for over a month and I like it so far. It's less taxing on the eyes.
And most importantly it doesn't feel weirdly stimulating, ADHD-inducing like LCD displays. It doesn't stress me as much.
There is still a little EMF:
On the front the values go up to 0.5uT averaging 0.1-0.3 uT.
On the back there is close to zero or zero measurable EMF, so if you touch it on the back you can reduce EMF exposure.
I can't use if for working I think it's too small for that. Typing also takes longer. So I'm using mostly the stylus to literally write what I want to post, which is fine. I'm also using text to speech which works surprisingly well. Still if I need to be quick, I don't use my E-Ink I go for my laptop or phone. If I only read, research do little typing it's a very good device.
Watching videos on it works as well and also feels less stimulating than on other devices.