You will notice however that this is only due to the 1.18 patch not having everything in it. Yes, they could hold it back until everything is ready, but going by the atmosphere currently present on the forums etc (As in, why isn't there new stuff, it has been X months!) they want to get something out, and fix what is seen as an issue for the moment.
It is all part of The Plan, and unless they just held everything back until it was all complete then things are going to be odd, be it that XP becomes good/bad/completely random. Plus it isn't an interview, it is him responding to forum posts in a way that isn't PR speak - would you rather he just said, oh no, things during this time of massive change will just be awesome, no problems even as we implement things earlier than we might otherwise to keep people reasonably happy that things are actually happening.
As to getting the SP 'while we can', I'm sure that come the full implementation of the various plans hinted at, you will have enough ways to have it coming out of your ears rather than gaming the Leve system for maximum SP. I am definitely looking forward to hunting becoming a viable way to earn XP, as it can be a fun thing to do with friends and it doesn't have defined start or end, so lets you do as you wish.
They are between a rock and a hard place as many folk don't seem to realise anything is happening unless it is implemented on the live servers, and then when they do, of course when it is a work in progress things are not going to be perfect. I'm interested in hearing more about the multiple activities outside of Leves intended for parties in the future, it seems even monster hunting and some sort of 'world events' (I use that in the same way as Behest) will make up the majority of play time, rather than Leves as it is now.
I'm looking forward to hearing the overall 'game plan' in the future, because the game we are getting isn't the one I signed up for, but I'm intrigued none the less.