This is good advice and something similar helped me quite a bit when young (and still when old).

I’ve been lucky enough to usually work on what’s interesting to me. I care a lot about my work and so like to spend time outside of work learning, training, working extra.

Also, there are some firms where there are zero sum situations where competing with co-workers is a real thing. Working weekends gives an advantage.

The question is whether this is fair or sustainable or whatnot. But the reality is that this can be helpful.

I find managers who demand this to be complete assholes though. I’m fine being flexible with my time and me deciding when I want to work extra. Having someone else expect or order is completely lame and having leadership say stuff like this would demoralize me.

I like to keep my weekend work pretty secret so as not to “brag” or let management know this is an option.