So you like the written “proof” so you can face off your colleagues in case of disagreement? You seem to have negative feelings about your work environment. You should consider changing jobs.
No, I want processes, agreements, and ideas, documented. Slack, Zoom and other tools make this easier.
As someone who had to train many junior employees, having a record trail is the best answer to the question “why the hell did we do this in the first place?”.