>Conference calls, slack and email are no substitute for the face-to-face conversations that can resolve blocking issues in a few seconds versus a few hours.
I do, continually, particularly when communicating with the less technically inclined. Slack conversations can drag on, email chains take days, conference calls are great when everyone's paying attention but that's not often (IMHO).
Tem minutes in a room discussing an issue with all interested parties can sort things out far faster, in my experience.
Which may not be universally applicable - I'm not claiming it is, or that fully remote working doesn't work for others. Just that I've seen it be less than perfect on a few occasions.
I haven't found this to be the case