Absolutely, Taiwan preemptively attacking the PRC is beyond anything in my comprehension.
I also do not think that India, Vietnam, the U.S. or anyone else looks at the Three Gorges dam as of any military interest, except in some all out war scenario. Small minor conflicts do not lightly bring cause for considering such a target, knowing equal retaliation would be the result. So, minus any “big war” scenario, I think there is not ANY military interest, by anyone. “Future planning” for all possible scenarios goes on all the time, but that does not make things of immediate interest.