My current supervisor said that posting questions and helps in public chat space is valuable since there's a chance that others will see and learn from the same

My current supervisor said that posting questions and helps in public chat space is valuable since there's a chance that others will see and learn from the same question. I guess he's right, after 3 months I can easily separate those who can follow conversation on slack and don't need other briefing, and those who need other session of briefing even though there's already many conversation and documentation. The former will be better remote worker.