I thought that Putin most likely would not waste money on such nonsense, but I did find the comments humorous.
But now I am starting to think that these... "people" aren't just utterly delusional Internet users from Russia, but actual, paid-for, managed and directed sockpuppets.
I think it's a bit of both.
There are wildly delusional advocates for almost any position, I don't see why Russian foreign policy would be any different. Especially when you consider that Russia does have some legitimate grievances against the West (I get why people wanted the NATO expansion, but expanding an anti-Russia alliance into the former USSR was more than a bit provocative).
At the end of the day Russians are just like anyone else, and they'll be willing to swallow a boat-load of BS so they can cheer for Russia. Some of them will go online and undergo crazy rationalizations on comment boards to convince people why Russia is in the right. They're largely following the same pool of newspapers, blogs, and pundits, so they'll all repeat the same arguments and crazy theories.
I have no idea how to differentiate these people from the actual trolls.