Earlier quoted context omitted.
China is quite obviously lying about this being a weather balloon. You can see in the video about the NOAA weather balloons how small they are. The balloon that was just shot down was huge and was being actively maneuvered.
There are so many companies building airship prototypes of similar scale, Occam's Razor suggests its benign. It's like seeing your first satellite and being convinced it must be military.. This isn't the Sputnik era of ballooning by any stretch. https://aviationoutlook.com/airship-manufacturers/
I genuinely cannot understand how you think that's a simpler explanation than it being a surveillance platform.
(btw the chinese press tried to claim that it's a weather balloon, an obvious lie)