This is like telling software people to stop using words like "bug" or "patch". It would be silly. Those terms are firmly ensconced in the vocabulary of the people who use them and everyone who needs to know what they mean do know what they mean.

It's not "really easy". This is a technical term used the world over to convey a very specific meaning. Bankruptcy laws define and use the term. Contracts define and use the term, etc, etc.

Jargon arises out of need and is carried on because it becomes embedded in the scaffolding of a discipline. It's not about feeling special as part of the in group or something like that.