I understand that it could have been easier from the start by using a set. But at the time, it wasn't a requirement. Why would you use a set for a single entry?

I understand that it could have been easier from the start by using a set. But at the time, it wasn't a requirement. Why would you use a set for a single entry? Furthermore, you didn't need to keep using booleans. You could run a script that reads the boolean and update the new field in the row, and transition your code to use that.