Rake is a very interesting topic, because both players and operators often fail to understand that the two perspectives are both correct and can be merged into a good solution for both sides.
Players have to realise that rake is necessary because...
• software, servers, customer service and - above all -
advertisment cost a lot of money
• without ads, not a lot of new players will start playing poker compared to now - and finally, the successful winning player lives from the masses of recreational players as much as Shaq O'Neal lives from the millions of NBA fans
• poker operators need to earn money
Operators on the other hand need to understand that...
• their revenues can be even higher with a low relative rake - as much more hands are being played on a low rake basis
• too high rake changes poker from being a challenging game of strategy to a lottery - which is bad for the image of it as a competitive sports
So if we look at today's market, I think it's not an accident that PokerStars & Full Tilt have in average low rakes compared to their competitors. I even like to think it's a part of their success.
And probably, micro / low stakes rake should be even lower, as there is not a huge downside for the operator: micro stakes players don't cash out a lot anyways.
But looking at the main post of the thread you link - this guy belongs to the big group of players that don't understand. He believes that without rake, he would still have a similar edge - even if there would be close to no marketing.
Even if one does not believe the basic logic of this - why then is in today's transparent environment no super-low rake poker room successful?
From a psychological mindset, I would not even see rake as a "necessary evil" - and not even as a thing I as a winning player pay.
You could also see it the other way around: a poker room pays you as a winning player for filling his tables, providing success stories and making more games run. You contribute to the environment as a winning player - just as Shaq O'Neal creates more fans and increases merchandise & pay TV sales.
Best,
Lutz