That is straight-up bollocks. Mainframe hasn't been hopped forever as I pointed out in that thread. Sucky pools can blame hoppers all they want, but the Internet remembers and lies like this can be debunked too easily.
Next Eclipse and Mineco.in are going to blame poor performance on hoppers.
The plain truth is: hopping is an asset to smaller pools and insignificant to larger pools. Pools that spend their time trying to thwart hoppers are falling behind to pools that don't care about hoppers and just work on creating great pools.
Case in point: BitCoinPool decided to get all self-righteous and thwart hoppers (despite stating that a percentage donation would whitelist you from hopper flagging). The result: Geebus screwed up the web page and the database resulting in serious downtime (
http://bitcoinpool.com/index.php?page=3&ipp=1&do=archive, search for 'down' here:
http://pastebin.com/GX69BZzM).
Compare that to the hopper friendly (actually indifferent) BitClockers. They are growing and focusing on building a strong infrastructure and not caring at all about hoppers. So they are stickied to the top of the pools list (thereby attracting more miners), experiencing their highest hash rates:
https://bitcointalksearch.org/topic/m.470459 and recognizing the value of hoppers:
http://pastebin.com/VCqp55W2One of these pools is growing and one is dying. Mainframe is dying. Pools that welcome hoppers are doing fine, pools that spend their cycles trying to fight hoppers are just wasting their time and hurting their other lazy miners (oh I'm sorry, do you insist I refer to people who do a set and forget as ethical or honest? no thanks. They are just lazy or casual. If they don't like the amount they are paid, then they can work for more like most hoppers do).