Are you kidding? You make it sound like Greece is doing everybody a favour by wasting EU money.
Germany used to have its own currency and did very well exporting its goods. So does Japan, so does Singapore, so does Switzerland, so do Denmark and the US.
The racism accusation is a little strong and isn't helpful to the debate. I do agree that the post you are referring to seems to be woefully devoid of any insight into the way the benefits that have accrued to the 'northern' economies and Germany in particular, from sharing a currency with Spain, Greece etc.
Germany used to have its own currency and did very well exporting its goods. So does Japan, so does Singapore, so does Switzerland, so do Denmark and the US.