whatever dude. I do believe there will be native 10.3 support i can also read there statement which clearly says that there will be. There also could be an updated downgrade option for there launcher but dont really see the point anymore since the only reason to go back to 4.5 was for mset. You and a lot of people forget that downgrading is dangerous business which some people just doesnt want to deal with.
Im just gonna state that ARM11K service exposure is not kernel access. In fact ARM11 kernel access is not even ARM9 kernel access. So, memchunkhax2 won't get us any closer to kernel access to ARM9 kernel code execution on 10.3. Downgrade is a good use for it.
I'm not saying there would be no kernel access on 10.3, because there are paths to it. Just that the justification of native 10.3 support with memchunkhax2 makes no sense. At all.