What's the difference between a flat organizer and an accordion-style tech pouch?

Flat organizers (BAGSMART large, MATEIN) lay open like a book and use elastic loops, great for cables and small flat items, but bulky chargers fight the layout. Accordion-style pouches (tomtoc, Peak Design, Aer) expand outward and swallow oddly shaped items like wall bricks and mice more gracefully. Specialist-subreddit consensus favors accordion designs for daily-carry flexibility and flat designs for trip-specific cable kits.