Aside from the metaphor making no sense, the goal of BIP-110 is a soft fork rather than a chain split / hard fork. Even if there is a chain split there won't be replay protection. Thus you're spewing ...
Well, as you say in your own blogpost there is indeed a high probability of chainsplitting. Maybe you like “spewing nonsense” on your blog?
With no replay protection for transactions with spam, of course, as they’re the target of the filter. But I don’t see why a transaction that does not use any known exploit for data storage couldn’t be in both chains in the case of a split.