Taking notes and documenting business decisions. What has changed?

Hi. If this is not the right place for this rant/question, feel free to remove it. Thanks in advance for any input.

TLDR: Is taking notes and documenting business decisions no longer a thing? Am I THAT old and out of the loop, or am I working with people who have become complacent or disinterested or overly reliant on “someone else will do it”?

A pretty significant business decision was made several months ago by four individuals, two of which are managers who are ultimately responsible for it. We put it in action and now months later, a worker from the department point out that the decision does not seem to make sense or align with our published contracts and asked what the reason for the decision is and wanted to make sure we are doing the right thing.

Of the four people who were in the meeting and made the decision, not one of them remembers WHY the decision was made. Not one of them took notes. Not one of them documented the discussion, the reason for the decision, etc., in any way. They even came to me to ask if I remember. Hello, I was not in the meeting and was not the one who submitted the new guideline for publication. I was not involved in any way.

A similar situation arose a week or so later and I was feeling baffled because that one is actually related to state regulations. No one took notes, no one documented anything or could explain to me what I missed (I was accidentally left off the meeting which was a huge miss because I’m the primary person in charge of this process).

I vented to a co-worker who is a director and she said “oh yeah, I am guilt too. I never take notes, I’m too busy and by the end of the day I don’t even know what I’m doing. And notes don’t really help anyway. I don’t think people even pay attention during the meetings.”

Sorry, but a note saying “we made this decision because of XYZ” would in fact be pretty helpful right now.

What am I missing here?