RDF won't kill wPvP. Lordaeron and Icecrown have RDF (other with high rates as well), they also have strong presence of wPvP. Ever been to Tanaris, Sholazar, STV, Barrens, Hellfire Peninsula, Dark Portal, Nagrand, Borean Tundra, Icecrown, Storm Peaks, Un'goro, Arathi Highlands or Hillsbrad Foothills? Or any random zone with possibility of running to other faction? wPvP will happen.
RDF leveling from 15 upwards isn't the only way to level. Some players prefer questing over RDF. Queue times vary based on active roles, time of the day and a bit on level. If queue times are really long, people will do quests instead. Also RDF doesn't level your gathering professions either. RDF may cut down wPvP a bit, but don't forget max level wPvP is probably more common eventually than the occasional skirmish that may happen between few leveling players.
There are some vocal players demanding lower rates (who knows how many accounts are from same user). X5 is what it's atm going to be based on the announcement. If I wanted lower rates myself, I would ask for adjustable rates, not forcing everybody to go through the same. I'm not here forcing everybody should go with the rates I want. I'm about the player given choice of choosing their own EXP rates between 0.5x to 5x, could go as high as x7, but I'll keep the given x5 as an upper limit for now. Those who want their Vanilla x1 journeys can achieve that with adjusted x1 rate. I'm no Vanilla enthusiast/elitist, I like my QoL improvements added to the game, and shorter leveling times. I have no desire to spend weeks on end to level a single character. I'm sure many want to do that, and many who don't. Thus I'm all about the adjustable EXP rates. The best compromise for the situation.
I wouldn't say there are "dumbasses with lobotomy", but inexperienced, ignorant, out of touch or new players who just may not know how things usually go around here.
And as Obnoxious stated, I'm no part of Warmane staff.