The "normal" person holding down a C-level job providing for his family only to hurl plates at his wife whenever he's mad is "doing fine".
The "normal" person going to a therapist every week is "doing fine".
The otherwise friendly person who gets filled with road rage every time they're behind the wheel is "doing fine".
Your friend who kinda takes jokes too personally and gets cries whenever y'all crack wise is "doing fine".
The point is that while we may all figure out how to process emotions, we don't always nail it. "Normal people" are not always fine. Plenty of people have problems handling their emotions, and how you handle your emotions impacts you and those around you. Many people are raised under the impression that expressing certain emotions, or acting on them in certain ways, is wrong. This approach changes that.
Good for you, you figured it out. But you're displaying an incredible amount of ignorance by going, "Well, I turned out just fine, so why can't everyone else?". Nobody else has the exact same upbringing you had.
That said, I could do without all the “safe spaces” lingo, which is performative and alienating.