I agree with the overarching sentiment, which is to lead by example (even if you're not explicitly in a leadership position).
At the same time I can accept some nuance here, e.g. working nights and weekends because you're taking some time back during the day in the week.
Similarly with remote working, if there's a wide enough timezone difference you might shift your routine to maximise overlap with the team.
I'm strongly in favour of maintaining harmony between work and life such that you're able to comfortably do both, but would not insist on a hard and fast rule.
If someone even further up the ladder says X does nights and weekends, so should the rest of the team, then the buck stops with that person, and they are contributing negatively to the culture.
At the same time I can accept some nuance here, e.g. working nights and weekends because you're taking some time back during the day in the week.
Similarly with remote working, if there's a wide enough timezone difference you might shift your routine to maximise overlap with the team.
I'm strongly in favour of maintaining harmony between work and life such that you're able to comfortably do both, but would not insist on a hard and fast rule.
If someone even further up the ladder says X does nights and weekends, so should the rest of the team, then the buck stops with that person, and they are contributing negatively to the culture.