Possibly horrible in some ways, awesome in others. I'd hope for an ecosystem where users have some semblance of secure(ish) control in terms of what is overlaid in their device's viewport, and what others see for them.
But as a user, like with browsers, I'd always want the ability to trump what settings others might be projecting unless it is part of say, an app experience where I'm agreeing to it under the ToS. That way if someone is being offensive with something I don't like, I can decide to switch it off. And I could of course just turn off the AR experience altogether if needed.
But nudity/porn filters will almost certainly be a thing, as will something that cross-references LinkedIn data with other websites to tell you everything you wanted to know about someone including their estimated salary, where they live, how much they paid for their home, etc.
The fascinating part of the next 10-20 years will be observing how the AR ecosystem evolves, how open it will be (hah...), and how society responds. I imagine that like most major shifts in communication and technology, young people will adopt this stuff instantly, and old people will push back because it is offensive, or they can't control it and enforce their viewpoints. History tends to repeat itself in that regard.