> When people say things they often have a hidden motivation, and who they are is a strong signal about what their hidden motivation is.

Citation needed.

The idea that most statements contain hidden meanings or only serve to cover up hidden motivations suggests an incredible level of paranoia.

I would posit the opposite - when people say things you can & should generally take them at face value. Sometimes people will disappoint you some of the time. Some people will do it so often that you would do well to discount their future statements. If you find yourself believing that anyone who doesn't share your opinions & values is secretly a facist/nazi, carefully curating their public image until it's time to strike, then you should really consider finding some grass and touching it.