I don't see why is that surprise as just because prosecution asked for 36 months doesn't mean that he will automatically get that sentence, especially after he pleaded guilty.
Yeah but he looked suspiciously happy in that image he shared, as if he made a deal with certain someone

In many countries (like for example my country, Croatia) people like him wouldn't spend a single day in prison let alone few months.
I am sure he won't be in regular prison with killers or worst kind of criminals, and if Roger Ver survived 10 months in prison than CZ can do it also.
Speaking about prisons, I hear that Finland have best conditions in the world, even sauna is provided for inmates, and rooms look more like in average hotel.