The server is LRP because the playerbase is LRP. As long as you aren't a dick and follow the rules, there is no actual requirement to RP much to play on Paradise, it's not enforced/encouraged by the admins nor the game mechanics.
Just look at the rules, Rule 2 is the only rule that really covers Roleplaying, and could pretty much be summed up as "no metagaming, IC in OOC, or silly names" as it doesn't enforce anything beyond those basic low RP concepts, and specifically says it doesn't enforce higher RP stuff such as expected level of knowledge for your role, Clone memory disorder, etc.
At the end of the day, the players that play on the server decide what kind of server it is, enforcing more RP mechanics through rules/admins/code would mean upsetting and potentially losing a lot of the current players.
As much as I love RP, I don't see being a LRP server as a bad thing, it's obviously what the players want, what the staff are happy with, and provides a fun experience for the many people that play here already.
I think Paradise should just embrace being LRP and just remove any references to MRP, because that's clearly inaccurate at this point.