If the blocksize is too big, you can't host the blockchain in your computer. Right now for example myself, if the blocks x2 by increasing to 2MB, im done with it, im not running a node, because I will run out of space. Like me, a lot of casual people running nodes will give up. This is why raising the block size right now is an act of stupidity, when we have segwit to deal with it, not to mention the actual risk of a hardfork. Anyone supporting bigger blocks now doesn't get it or has a certain agenda.
Yes i get it now, although not because of that argument, because a harddisksize argument is not good, you can get a new HDD for 20$.
What the real problem is the spam transactions and the hard fork risks of splitting the bitcoin, because divide and conquer is how the enemy operates.