honestly this company seems reasonable to me.

Unreasonable, or mistakes:

1. LW for the goof of telling colleague
2. co-worker for telling HR
3. HR and company president for being bizarre wankers about an employee with the very reasonable ask of having a chain of command

Eminently reasonable:

1. Packing up your stuff in a company with a history of firing people once you know they're ticked off
2. Posting the job once you know an employee is job hunting, especially when their ask is for something you have no intention of giving.

Above and beyond:

1. Offering more money and trying to make LW want to stay.