That's for deployed services that others are using.
Either way, "generally" was the important word there. Every license is different, some licenses and parts of licenses are invalid in some jurisdictions, and the interpretation of the license by the judge, licensor, and licensee can affect a judgement on whether something is infringing or fair use.
If you have questions about licensing for your specific situation and AGPL's plain text doesn't answer it for you (it's not just legalese, it's pretty readable), then talk to a lawyer who specializes in copyright for your jurisdiction.