saying this is like me looking out my window and after seeing the streets are wet make the conclusion that it is going to rain in a couple of hours! (it is actually raining right now )

think about it this way, when you want to buy bitcoin (or as a trader place a buy/sell order) you are not looking at the difficulty to see how much it is to make a decision. instead you look at the "price charts" and place your orders. similarly a miner doesn't look at the difficulty, they look at price and decide whether to shut down, continue mining, hold their bitcoin or sell it or even buy new ASIC and mine bitcoin with it.
all working in the opposite direction of what you said here. price goes up and down and difficulty follows afterwards.