From the previous discussion, here is a con:
CON - "For professional brands, forcing you to change/set passwords on first logins would not be the right thing to do, IMO. It should be safe to assume the installer handles that task as part of a professional install.
As an example, the customer might want to set passwords and not give knowledge to the installer, or the installer might be checking some units beforehand (maybe they are installing 20 cameras, 15 they are familiar with and 5 are new models, so they bench test those to get familiar with them). Forcing password changes arbitrarily shouldn't be necessary when dealing with a "professional". So, I would not blame Exacq or others for now following that process, I would blame the installer OR the customer, that is THEIR job, not the manufacturers."