1 and 2 are absolutely correct, but for specific subsets. Outside such subsets, this optimisation still applies.
3 is correct sometimes as reversed advice. I see your point in 3 often (usually implicit). My post reverses that in response to it sometimes going too far.
It seems I went too far. Hence the expanded original:
Adjust how much to omit based on the concentration and domain-intelligence of the listener. Your starting point should probably err more on the side of “omit more redundancy” than it currently does.
You would wash your hands properly at all the appropriate times.
You would study with spaced repetition.
You would stop looking at (mainstream, megacorporate) social media.