We're not allowed to ignore you and you're not allowed to ignore us. Besides, the whole 'do not ignore mods' thing is for your benefit. Often, mods will give you an 'alert' or a heads up to stop doing something or else you'll face consequences. If you have us on ignore, you won't see these alerts and you'll face the penalties (then, of course, people come yelling at us for not telling them ahead of time, go figure).
Plus, the idea of having a common account to issue warnings means there would be absolutely no accountability in who did what. Believe it or not, we like to have a bit of transparency in our actions, so admins and other mods can be sure no one is abusing their mod duties. If you received a warning from 'Moderator1' that you disagreed with, it would take more time and effort to get the issue resolved.
Just skip our posts if you don't like us. The idea is quite ridiculous, you're basically asking if it's okay to totally ignore the people who keep this place in check. What's the benefit in that?