What complete tosh! Different diciplines / styles.
What else?
One jumping event not High / long and triple?
One throwing event not discus / shot / javelin and hammer?
Diving Just one board not different hights / spring board?
Walk racing it highly technical. Try it one day.
athletics at it's best is when it's simple and pure : Fastest, Highest, Furthest.
So yes
- long jump is pure (Furthest) - but should be freestyle, no restrictions on the type of jump, the Delamere flip should be legal
- high jump is pure (Highest) - but should be freestyle, no restrictions on type of jump, allow take off from two feet)
- triple jump is long-jump in a silly way. Get rid of that
Diving - is not athletics, that's a performance sport, judged subjectively with points/10 so a different conversation
Walking - is just running in a silly way. We could equally have running but your left arm moves with your left leg. Get of it
Throwing events - they are pure (Furthest) (but do they also have odd restrictions on technique - throwing in a particular way?). Throwing very different objects is like running different distances, so makes sense. The particular objects we have are a bit random, though.