

Good idea; bad execution.
If they think for a minute that Trump won’t order his goons to arrest people doing this; they’re being careless.
Instead of a bullhorn; a private message blast out to any interested parties would suffice; ideally via a secure Signal group chat or something similar. A phone tree being set into motion could work too; ringing phones; as could an SMS trigger an alert to all neighborhood residents.
All that said; it’s good that they’re basically warning folks of federal agents snooping around. There’s no reason to let them get away with it casually during this Administration; if they want to illegally investigate immigrants, make it hard on them. Document everything.
Given the absurd number of sites that require a login for no discernible security reason at all whatsoever; I get it.
A “Common” password makes sense. This password should never be used to log into or protect anything secure however.
Similarly a “Common” password might be used to enable login more easily from certain devices; but ideally this “temporary” password should probably be something that is, yet again, different from the first “Common” password you use.
It boggles my mind that someone like this isn’t at least using a specific passphrase for secure work accounts only.
While I can personally understand a need for some password reuse across multiple domains; at least there should be some separation of larger “superdomains” such as “work”, “personal” and “throwaway” so that breaches don’t have such a catastrophic impact.
A system of generating secure, unrelated but memorable phrases (for you) for those times you can’t carry or use a password manager is frequently essential. That way you can recall the password on the fly when it is asked of you; all you need to do is think about the unrelated thing you attached that information to.