YSK: Browsing "ALL" at work might get you pulled into an office, even with NSFW off.
Why YSK: It appears several Lemmy Instances are flagged as suspicious and at least 1 instance intentionally using the name of ransomware. A couple of the big enterprise monitoring suites (Fortiguard, ZScaler) will flag your account and may end up with you being pulled into an office for an explanation, or worse.
TL;DR: Keep browsing to your local instance at work for now.
The other day I was on all and there was fucking porn without any NSFW filter on it on some cumsluts community, no co-workers were around thankfully but it was a good wake up call that all is not a place you wanna be unless you are at home.