Same question applies at home. Are you working, or just logged in to Slack/Teams (or whatever) and available if it pings?

I work from home quite a bit, but I'm expected to be available and working during business hours. So other than not commuting to the office, it's not a huge difference.

If you are working from home, you are judged solely by your productivity. If you work in an office, there is productivity and there is also attendance. Someone can show up every day and appear to be working hard, yet get nothing done. You just can't do that working from home (not for very long anyways).

For most professionals, attendance shouldn't really matter. You're not creating value by merely being present. There are exceptions - customer service for example - but even in those cases being just logged into Slack/Teams is perfectly cromulent.

Exactly.

It’s rather useless to just look at the clocked hours.