Close, but no. From the Wikipedia article, it seems like Stirner identified correctly that all actions stem from “egoism”, as in the internal motivations of anyone to act in some way… but failed to identify that this “egoism” can include acting following some laws, morals, or even altruistic actions, that an individual can perceive as beneficial for themselves.

There is no trap here, a society built on consensus, is whatever the individuals freely identify as positive for them. The biggest issue, is how to provide people with enough information so they can decide by themselves whether (for example) paying 5% more taxes in order to build some thousand miles of railroads, is something positive for their goals, or not.

The problem right now, is most people blindly defer making those decisions to others, on pure faith into whatever some corporation, party, or leader, influenced by whomever, decides to tell them… and once deferred (casting their votes), they’re out of the decision making process for years at a time.