“Jihan and Bitcoin ABC believe that increasing the blocksize limit will centralize the mining activity because only larger-scale miners will be able to process larger blocks.” Article states. Is it true?
No, that is certainly NOT true at all. Both ABC and BU has larger blocksize (up to 1 Terabyte) as a goal. But first the software must be able to handle it.
Sounds like the last 5 years of concern trolling from core. Miners decide at what pace they want to increase block size. Not Devs. It's in the miners interest.
Also theres the "slow block" attack where a large pool waits a few seconds after finding a block before propagating it to get a head start on the next block.
They're trying to prevent "mega block" attacks where a miner distributes a large, complex block that takes a long time to validate giving them extra time to mine the next block.