> It's aggravating that parents are purposefully written in a language that makes it harder to read.

Legalese is a discovered language. Various phrases are reused because their meaning has been found in previous court cases. Using novel language to express an idea with an existing, court-tested alternative is begging for trouble.

Lawyers are not very expensive compared to the consequences of trying to read it yourself. This would still be true even with a less-legal-ly legalease.