I agree with this also. We have to make estimates as to how long it will take. If it's not a simply READ endpoint or working on a piece of code that I've previously worked (bug fix, minor feature add) on I don't feel I can give an accurate estimate at all. I'm Mid-to-Senior (3 years exp) and fairly new (2-3 months) at my job so the institutional knowledge of the code base and specific systems just isn't there yet.