The vote on slush is, and I quote: Right now, every Slush Pool miner can vote for larger blocksize.
So clearly (and if you cared to have read the last couple of pages here), it is not about XT, BIP100, BIP101 or whatever. Just bigger block size, which can be achieved any of different ways, including XT.
And no, not all other pools mine bigger (than standard 1MB) blocks, though some (mainly Chinese) pools mine 8MB blocks. The troll would have you believe otherwise.
Additionally (and as far as I am aware), only slush has ACTUALLY offered the choice to users to vote for bigger blocks.
That much the troll knows, though he keeps trying to whip up some kind of negativity towards slush by attributing patently false aims to slush in a veiled attempt to get miners to elope to his his own pool.