If I have to give one advice to new developers, it would be - Don't assume that you are smarter than the other person and you know everything about why the other developer has implemented a system in a particular way. Don't assume. Ask your doubts. Clarify the pros and cons of a strategy. Learn from it.

Don't create a bias in your mind about a technology or a way in which things are done.

Having healthy discussions with a fellow developer is the one of the great ways to grow in this field.