"Leading by example" does not mean a leader doing the same job as you.

OK, that's fair and constructive criticism, I take that! You got a point there.

Now it would be great to know, in what aspects a leading person can act in certain ways, that I can copy while doing my job. It also needs to be things, that I don't already do. That would be even more constructive criticism.

You got a point though, and I will think about what those things could be, that someone in a leading position does, that I could copy as behaviors, that are ethically good and also good for the job.

I think the context here is that if a company advertises perks like unlimited vacation, and remote work, then you want to see that employees who take advantage of the perks are not at a disadvantage when it comes to the work they do or advancement in the company. If company leadership is taking frequent vacations and working from home often, it's a better sign that you won't be disadvantaged for doing that than if the company leadership was always working and always in the office.

My first question after someone mentions unlimited vacation is "how much vacation did the boss use last year?". If it's less than 4 weeks, I would view that company as being dishonest about their vacation policy.

The same thing applies to the number of hours worked. I value work-life balance and so if my boss is working 60 hours a week, I will know that company is not for me, because the boss would view me and my insistence on working 40 hours or less as uncommitted to company goals.