To be technical. My manager would be attend my funeral as would my coworkers.
The company would repost my job. And/or force my boss to not backfill so they can consider me a rif.
The advice is solid, but it's not your manager. It's the company. It's corp values. Not theirs or yours. The corporation.
We are paying people at the top very well. So well in fact that they are destroying lives trying to keep the power within their own p&l. The person managing you is struggling with this just as much. If they don't have an official chief of staff, then they're not high enough on the totem pole to make any real decisions at this point. And if they do have a CoS and are a good person, no one is listening to them either.
It's the flywheel model when the spokes are all fighting to be the shinest one but the axle is rotten and the car is now driving itself away for preservation.