To supply and run a crowded camp, you need guards and logistics. Nothing there.
Nowadays, researchers could easily obtain satellites images showing actual activities with all those clues.
Just by looking at the images, it not possible to draw conclusion they were concentration camps. They could be barracks under construction and that would also explain why blanket at Baidu map. The report didn't explain its logic to conclude they were concentration camps. And they didn't even consider other possibilities at all.
It is not serious research.
Remember the satellite image analysis of Wuhan's hospitals' parking lots that was supposed to reveal the true scale of covid19 outbreak in Wuhan? High resolution images with all the details. Still lots of flaws and no one takes it seriously now.
New York Times obtained some leaked confidential documents of China's Xinjiang policies. Nothing even close to concentration camp was revealed. It actually did CCP some favor.