[guide] Update reason for preferring object destructuring

Fixes #2293

The reason for preferring object destructuring is quite narrow in scope. While this guide isn't intended to provide every possible reason for every preference, it perhaps should aim to provide a succinct and compelling reason. The current reasoning could be improved to meet this standard, so I'm proposing adding some additional information to clarify the benefits of what is an often controversial rule (controversial only because its introduction can require many changes in a mature codebase and has no auto fix available).