I for sure agree with you, I think the concepts of safe spaces and trigger warnings are regularly abused. As an adult you should always make the best decisions for you and your specific situation.
But I don't think anything, whether that be safe spaces, trigger warnings, or being against them should be forced on you.
For example, if a professor in class decides to say "this video has a scene of rape.." I don't think there is anything wrong with that. However, if they have to listen 20 pages of potential offenses, I think that's overboard.
Adults should be able to make their own educated decisions.