Here’s a hot take
Whether or not Blizzard enforces a rule does not make it ok to roll on an RP server and not RP.
There are many, many PvP and PvE only servers. There’s no reason to roll on an RP server that doesn’t evolve taking advantage of the RP community in some way. Don’t be that person. If you are new to RP and what to give it a try, welcome. New RPers will be greeted with open arms. Just don’t come and ruin other people’s fun because it’s not enforced due to Blizzard’s lack of moderation. Moderating RP realms takes a lot of resources.