Years back we were doing something that included users documenting TV shows. We had a big meeting where people put every feature they wanted on index cards. We laid the cards out a founder's dining room table. The host got their change jar and each person got a certain number of pennies to mark features they thought were vital for first launch.
After the first round of token-voting, the "user accounts" card had no votes. At first it seemed impossible. But after some discussion, we realized that viewing users didn't need accounts for launch. For people who wanted to edit, we let them type in a name to take credit for their contributions if they wanted, but with no verification. At worst, we figured we could add something more robust if the need were stronger.
It turned out fine. The launch got out earlier and we got to test a number of key product hypotheses without having to build any sort of user account system. Months later it did eventually become the highest priority. But not having accounts worked way longer than I expected.