Excellent first post, a solitary soul :Sign Good Job: welcome to the forum :victory:
Regarding the 'underactivity' issue. I don't understand how it would be possible for anyone with ME do underdo it even if they wanted to. Most of us struggle to get the support we need: it's incredibly difficult to get disability benefits, wheelchairs, help with care etc. I know plenty of people with mild/moderate ME who really shoudn't be working, but are forced to because there's no way they'd qualify for benefits, I am more severely affected and have to push myself to get to bathroom since I can't get an electric wheelchair on the NHS or afford to buy one myself.
I really find this passage very worrying, as it's exactly the kind of thing many doctors could use to deny severe sufferers help. Why give someone a wheelchair when all they need to do is gradually increase their excercise?
From the CME
A subset of people with CFS are so severely ill that they are largely housebound or bedbound. They require special attention, including a modified approach to exercise. Hand stretches and picking up and grasping objects may be all that can be managed at first. Gradually increasing activity to the point that patients can handle essential activities of daily living -- getting up, personal hygiene, and dressing -- is the next step.