#reality based self defense

Is Krav Maga just a marketing gimmick or actually the only self-defense that works in real life?

Do traditional martial arts schools actively discourage learning street-effective techniques?

Are traditional martial arts like Karate and Taekwondo obsolete for real street fights?

Is Krav Maga just marketing hype or the only martial art that actually works on the street?

Does "traditional" martial arts training actually make you less prepared for a street fight?