Not sure I understand your question, but in general rich web experience is close to 0. I use html2text which is good for the most part but if you receive emails with embedded javascript and you want to avoid them (a lot of phishing traps goes out of the equation with plaintext). It's a matter of your personal preference and priority. If you like the sort of things mentioned in the article you should give it a shot, at least, try taking a 2-week sabbatical from web email.
Are there any e-mail clients that actually execute JavaScript? I use mutt, Mail.app, and occasionally GMail, and none even support JavaScript execution, AFAIK, let alone execute it by default.
Granted. I am not equipped to answer the question, assumption about js could be wrong too. Perhaps, I should replace javascript with HTML. The argument still holds about distractions and phishing risks etc.
