I was annoyed at this one time so I took two legos and put them under the microscope. I couldn’t see it. Which is just to say how fucking tiny the scales are here.

For production parts we’re looking at drafts around 3 degrees. Which is… not what they have even considering the tuck back in!

3 degrees is the generic "I don't care and don't want to worry about it" draft angle. In many cases 0.5 degrees of draft angle is a non-issue.

3 degrees on a lego brick would be a difference of .3mm over its height. For comparison an amoeba is about .5mm. If you're zoomed out enough that you can see the length, you're not going to be able to discern the angle. The only way you'd see it is to check for the gap between the wall and a precision square.