Why is the weather forecast more and more inaccurate now?

Many people say it is because the weather is abnormal now, so I want to say that if it is abnormal, there will always be rules. This is just a rough idea. More accurately, for example, it is actually a big sun, and the forecast is rainy days. Isn't this too different? In fact, everyone knows why it is not allowed, because no one has invested too much energy in this area. I guess what they think is: if it's not allowed, it's not allowed. Anyway, the weather is changeable now, so what's the harm in letting nature take its course? If you are lazy and save trouble, you will not develop, and your salary is right. Unless the central government has very high requirements for weather forecasting, no one will develop in this area. However, the current demand in this area is only rural fields. It is estimated that they will think that even if the prediction is accurate, what should come will still come. What's the harm of not predicting? Even if something goes wrong, how much damage can it cause? Might as well sit at home and rest. So ... . The main reason is that no one wants to invest too much in this area, let alone consider some living arrangements of our people. What a joke!