Banks tend to have this policy because there are a lot of ways to steel in ways that you can cover your tracks. But most of those ways require regular effort to cover your tracks, so if you are locked out of the office for at least two weeks someone is likely to notice. Note that this is two continuous business weeks. Nothing happens over Christmas so that doesn't count.
I had a manager who couldn't let anything happen without her input. She went on vacation and participated in everything via Slack for two weeks. Making her disconnect might have helped more people realize how much she was ... "translating" requirements and work status between her reports and other teams.
