A few points
I think this is a well written and thoughtful article, but I'd like to raise some points about something the author said.....
"...if the public reflected more quietly on the issues, it is probable they would not wish their own employers to pursue such a draconian policy either."
There is a contract of employment between my employer and myself and either of us are free to terminate it under simple conditions within a short time. There is no contract between MPs and the people who voted to put them into Parliament. The people have to wait years for an opportunity to appoint a replacement.
My employer has written rules, available for me to read at all times. The vast majority of these rules only apply during the hours of work when I am 'performing my duties'. Outside those hours, my employer does not care what I do. MPs pass into law, rules that apply to me 24/365 and give power to their agents (police) to make up rules on the fly with no consultation with me.
(This is a turnaround situation where the appointee now has power over the 'appointer').
The situation and the effects of the relationship between the 'people' and the MPs and their agents are totally unlike the employer/employee relationship. Hence you cannot draw working comparisons between them. The authors statement (in quotes above) would be valid for a relationship between two normal people or a person and a reasonably 'benign' organisation. This is not the case for Parliament and the people.