How can you claim some hypothesis is true if the predictions are wrong? At the very least the hypothesis should be adjusted to try and include why the predictio

How can you claim some hypothesis is true if the predictions are wrong? At the very least the hypothesis should be adjusted to try and include why the predictions have failed. I'm not saying there isn't evidence, but the details do matter. There is a massive difference if the hypothesized phenomena happens in 100 years instead of 10 years (which it seems has been the claim for decades). At the very least there seems to be no accountability for incorrect predictions, which ends up determining the politics of a country. This politicizes it even more as people feel forced to change too quickly in ways they do not see justified.