I believe the problem they describe is both real and somewhat frivolous at the same time. The minimum transaction amount that does not incur fees is currently

I believe the problem they describe is both real and somewhat frivolous at the same time. The minimum transaction amount that does not incur fees is currently .01 BTC, so I think there is an actual issue for micro-transactions as things stand now. However, the smallest indivisible unit of a bitcoin is 1 satoshi (1e-8 BTC), and if the bitcoin fanatics are to be believed and 1 BTC will be worth anywhere from $40,000 to $1,000,000 in the future, it makes sense to deal in the smallest possible denomination that can show up on the blockchain. A 200K satoshi tip sounds a lot better than a .002 BTC tip, or even 2mBTC (hope I got those decimal places right!)