I’m not so quick to jump on them. To start with, those are probably extra large American flags. Assuming 8x12 foot, they are priced from $100-$130 each (if larger, MUCH more expensive), and with constant use, they probably only last in those conditions (Gulf Coast) from 1-3 months, less a week for every time it rains or has a high wind.
Lighting is even more expensive, perhaps $100/night. Add those costs for each and every flag. Then add the expense of weekly maintenance, along with “repair/replace when damaged”.
It starts to add up in a hurry.
B.S. alarm on that one.
Where I am, a 500 watt light costs just over $1/day if left on 24 hours.
In Florida, rates are somewhat higher, but then the utility is paying wholesale rates. So it is still going to be less than $1/night.