Another data point: I've never felt pressured to work more than 40 hours a week, and have probably averaged quite close to that over my FAANG career. Recently, with pandemic/WFH/less-to-do-outside-work, I started working some on evenings/weekends, and my manager asked me to stop because he doesn't want to have that kind of team culture.
+1 It can create a really toxic work culture. If I do work more its because I'm interested in a problem that I don't want to let sit till next week or the following day.
In general, I try to do this discretely by not pinging people outside working hours or trying to give impression I'm working late. Working late for me is usually working through code or a design at a time when I'm caught in it and don't want to let it sit until I solve it. If this happens I'll start late next day or reduce hours following week and I make sure I call this out during standup so my team knows why I'm signing off early.
It can become a snowball when one teammate sees another working and feels compelled to do same. Kudos to your manager for calling this out.