Don't personally remember that world.... So, around the bar... the old guys will tell you... boats crashing into one another is expensive and just not acceptable...
This is YACHT racing after all... not Car racing.

DSQ would certainly create a different game.
Just like the shift to WL racing from the point to point or big triangle races I sailed as a kid.
The change in the rules mindset correlates with the change in the kinds of sailing we do.

The country club sports, sailing, golf, tennis share some history... I think golf is a call your own foul sport as well... I don't play... but do you call foul on your partner.. of are you just playing the course. Has that sport changed?