Without a doubt, the tires are flatspotted - the question is, are the flatspots bad enough to cause a problem.
Flat spotting is a function of how much load is on the tires vs how much inflation pressure, the length of time, and the temperature. Unless the tires are resting in a contoured cradle, it doesn't matter what surface the tires are resting on.
The only way to be sure if it is a problem is to drive on them - and if they are a problem, will the flatspots work themselves out? Maybe.
So for those who want to know how to prevent (minimize?) flatspots, taking the load off the tires is the best - like removing the tires from the vehicle. Over inflating them is helpful. (You can over inflate tires by 20 psi without fear of explosion, but don't operate the tires at that pressure!) Moving the vehicle periodically is also helpful (that is resting the tires in a different spot - even 3 inches is enough!)