Is fluoride in water good or bad ?

Good. Pretty fluoride no one made it to middle age without cavities and often a missing tooth or two.

It will calcify your pineal gland if you use it while standing on top of a mountain for 60 years

Depends on the concentration.

it turned the frogs gay...

Whether it is good or bad for an individual is irrelevant, it is the principle of medicating the general population, without their informed consent which is bad.

good