I don’t doubt that a floating solar panel farm that was durable could be constructed, but...with the incompetent, woke hires getting the money doing the designing and planning, taking out 10% for the Big Guy (for American money involved) and money being siphoned off at every stage along the way by corrupt bureaucrats, there is no way a structurally sound one could ever be built.
And besides, water will almost always find a way over time to be in a more destructive state than any man-made structure can withstand.
I don’t doubt that a floating solar panel farm that was durable could be constructed, but..
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At a much greater cost/kWh.