Lol don’t fake it. Don’t cry is fine. But when you are hurt if you are ever hurt and you can’t express that, it actually harms you like as in your brain biologically.
It also has other drawbacks like anger people who can’t grieve turn to anger because they view it as safer because they are more fragile. The same with happiness but the worst you can do is fake it. If you don’t feel like crying you shouldn’t feel expected too either.