CURVATURE кривизна земной поверхности или отсутствие таковой

Related post:
fsr.boards.net/post/3927/thread


High precision measurements here. For a while it had me thinking that this proves the curvature of the earth. I am not sure, because the smaller yellow section (long about 30 meters) at bottom could shrink both because the earth has a curvature and because, due to distance, the windmills get smaller and smaller.

Also, the title "Distant Objects Disappear On The Horizon" is misleading, or rather "equivocal", because it's not clear if he is stating that they disappear just because they "seem" to disappear by getting smaller and smaller, or because they disappear "behind" the curvature. I am not even sure if the video is a flat earth video or a flat earth debunking video. He does not make either case.



Distant Objects Disappear On The Horizon - Part I - Experiment Preview - Nikon P900 [Windmills]
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Distant Objects Disappear On The Horizon - Part II - Actual Experiment - Nikon P900 [Windmills]
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Distant Objects Disappear On The Horizon - Experiment Part III - Nikon P900 [Windmills]
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Distant Objects Disappear On The Horizon - Experiment Part IV - Nikon P900 [Windmills]
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So, as a summary, the big question I have about that experiment is this. Is the windmill on the left shorter (due to being more submerged) than the one on the right? Because, since it is the one farther from the vantage point, then this would seem to prove a spherical earth:



I can't be positive, but I would tend to say that it just gets smaller. In other words, the windmill, being farther, gets smaller, and, as a consequence, the yellow section at the bottom, too, gets smaller. But for a few minutes, it made me scared that the earth is actually spherical and I've been wasting months.