GAH! I'm not saying it's a good setting-- I'm just giving a concrete example that nodes (and miners) can control their mempool sizes, as this was at odds with cypherdoc's expectations-- instead he thought miners might be suffering because of large mempools-- and I pointed out that if their mempool was too big they could simply reduce it and he said he didn't believe me. I don't know how I could have made it more clear, but I hope its clear now. 
yes, thanks for reminding me of that minrelaytxfee as an adjustable variable to screen the mempool. i had read about that the other day on Reddit but forgot. i'm not a tech guy afterall.
but you haven't verified that f2pool or Antpool has increased their minrelaytxfee have you to minimize their mempool? remember, this whole mempool discussion was based off you responding to Peter's mathematics post the other day where you argued that the block verification times were only 80ms for a 250 kB block b/c tx's had been pre-verified after being passed around to all nodes across the network and didn't require re-verification by miners on the relay network and was therefore a refutation of his hypothesis of increasing block verification times (16-37sec on avg) leading to SPV mining.