The post's central thesis is that updating your filters cannot be done in a decentralized way, and he cites adblockers as an example

This thesis is wrong and adblockers prove it. Adblockers that don't do what users want are ignored and their usage quickly drops to nil

His post also contains several other blunders, like "The goal of this change is not to help transactions to slip through more easily" -- it literally is. The motivation for the change is to invite spammers to use op_returns. Most of whom explicitly say they don't want to use op_returns.

He also presents a false dichotomy at the end of the post, asking why his opponents even care about bitcoin if they think spam can kill it. As if somehow the people who welcome spam care about bitcoin and the people who fight it don't. You can like bitcoin *and* fight spam on it via filters.