Well of course it was just wishful thinking. Tax still has to be paid. I just do not need to file a tax return. Now that isn’t necessarily a good thing eh? If you don’t file a tax return, they’ll just assume your claims for relief are no different from previous filing. But they will get updated income information from your employer.
Perhaps this has benefit only if you will have less relief to claim. Otherwise, it is to your advantage to file for the claims.