Big Blockers : Artificial block size limit relies on a central authority decision on limit vs market dynamics. Undermines the proposition of being able to transact on chain, contrary to philosophy of "being able to send payments without going through a financial institution". Anyone that disagrees is a moron set to destroy bitcoin.

Small Blockers : Increasing block size makes it i) harder to run a node, ii) favours big miners, both of which increase centralisation. Anyone that disagrees is a moron set to destroy bitcoin.