It varies, working from home can be a horrible isolating trap and simultaneously much more productive and appealing.

Especially in the winter months, if your work day is now at your home with no intrinsic reason to go anywhere else, you wake up in darkness and first leave the house in darkness, meanwhile the agency you'd otherwise have is impeded by people watching your Slack status wondering where you are, it's not exactly ideal. With no physical difference between work and home, you and up basically always being at home, which can be dreadful at times.

I don’t do well with 100% working from home.

My preference is 3 days in the office, I find anything less than that and I struggle mentally. My home starts to feel like a prison and I lose connection with people.

I really value human connection and I just don’t get the same thing online.

When I moved, I gave up a 7km (4 miles) bike commute along a river and switched to WFH. Definitely missed that.

I also feel disconnected from work when WFH, like I don't care about the company at all. The obvious problem is that it made me think the time spent working was quite a waste.

I didn't take as many and as socialable breaks.

When I was unproductive, I felt internal psychological pressure to work longer. Now in-office, I clock my hours and am free.

My life falls apart when I do not have the routine of getting up and going to work and talking to people. But I enjoy working from home because I feel like I can do less work (even during work hours) and more things I enjoy.

> tl;dr: positive impact

I think you're being a bit reductive there. For one, the article indicates the greatest benefits are from a hybrid environments where some time is spent in the office.