What say you, North American Vexillological Association? ( https://nava.org/good-flag-bad-flag )

The Five Principles are:

Keep It Simple. The flag should be so simple that a child can draw it from memory.
Use Meaningful Symbolism. The flag's images, colors, or patterns should relate to what it symbolizes.
Use 2 or 3 Basic Colors. Limit the number of colors on the flag to three which contrast well and come from the standard color set.
No Lettering or Seals. Never use writing of any kind or an organization's seal.
Be Distinctive or Be Related. Avoid duplicating other flags, but use similarities to show connections.

Can't be drawn by anyone from memory, has no symbolism, is mostly a riot of colors, doesn't have any seals but does have complex symbols (that have been rotated and angled, no less), and is nothing but duplications of other flags.

That's what 0 out 5? 0.5 out of 5?