If the product was successful even with the bug that annoyed millions of users, then have you really contributed anything by fixing it? Sometimes, the answer is

If the product was successful even with the bug that annoyed millions of users, then have you really contributed anything by fixing it? Sometimes, the answer is yes, but I think it makes sense to require data to back that up. Similarly, data should be required for new products as well. Like great, you built this new system, but no one used it so you actually just wasted a bunch of time.