Chat support gave me a temporary workaround:
Search for the contact in the regular “View Contacts” page. Add the password field to the columns. Once you search, the password field is shown unobsecured in the search results.
They have this simple how to video.
Chat support also suggested that we can leave feedback at https://keap.com/tellus. Ironically, I’m having tech issues using that form … (If any devs read this, the iFrame scrolling is set to “no” with an “overflow: hidden” style, so you can’t access the fields without tabbing, and you can’t see the captcha at all.)
I have opted to inform them that I would prefer this feature to be optional, and that I would set it to “off”.
Your Chrome plugin suggestion works beautifully.