Fish over crops? We already have crazy shortages of corn and grains world wide [1] (ignore the conspiratorial tone in the video if you don't like it, there are still plenty of objective observations).
What makes it a "crazy" shortage? Current wheat future prices is around $700[1]. That's definitely high at the last 5 years, but it's still lower than 2011-2012. If we zoom all the way out, we see that it was peaking at around ~$550 in the 70s-90s. Adjusted for inflation that's anywhere from $850 to $1650 in today's dollars. Was there "crazy shortages" during those time periods?
[1] https://www.tradingview.com/chart/?symbol=CBOT%3AZW2%21
edit: fix link
That video is a good example of why not to ignore the 'conspirational tone'.
[1]https://www.iceagefarmer.com/2021/07/21/global-wheat-supplie...
Variations in crop production especially regionally are quite normal, perhaps a little irritated because of climate issues, but the conspiracy and exaggeration are not at all necessary.
[1]https://www.forbes.com/sites/salgilbertie/2021/04/28/shrinki...
People choose what to plant or to plant at all in marginal land, they choose cultivars targeting specific weather patterns that are right or wrong, or a weather pattern makes a great year or a terrible one. This is all situation normal.
A lot of market analysis is just filling space with words or inventing attribution.
Change is hard but necessary and will involve some difficult choices.