I am reading so many different opinions here.

I wonder what would you all reply to an "Ask HN" thread like "I am working day and night and sending emails even outside business hours, but my colleagues do not reply unless it's business hours and that is really bugging me".

Btw, did you all consider that maybe that guy just needs or wants really hard that promotion or that salary level-up and is "just" working as hard as he can towards such goal? He/she/They might have duties you do not have (kids, family members, health expenses or other stuff).

@OP: I'd say, as long as you feel honest about your output and feel you're working fairly hard for your company you are okay. You might just want to take a break and think if there is any way to improve/optimise your output.