Every time this comes up i tell my personal and data driven experience as a middle manager in a company, and every time people trash me, but i keep saying it.

IT FUCKING DEPENDS!

From purely data point of view (note: this is from my place of work) workers whose work is purely executing more or less the same duties every day had their productivity have a nose dive when working long stretches from home. Also their works quality got worse. Its easy to reinforce bad habits whitout even noticing it, if the feedback comes from email and and not straight from the supervisor.

BUT with jobs like coders or artists where the job is more open ended instead of monotous labor there was no ill effects.

Then on the other side communication has gotten much slower with the people working from outside office. Where i used to just walk to the other room and ask something from my collegue i now need to message them in our internal and hope they notice it. Getting answers for questions have turned from 5 minute thing to 10-40 minute things.

Also from the point of more inventive things on my work we have lost a lot of changes to brainstorm ideas. No more throwing ideas around during lunch or coffee breaks