I feel like you already know the answer to this question.
I think most non-Americans who are cheering for Trump are doing so because the Bush/Clinton dynasties have fucked things up so much that anything different would be an improvement.
Those people would be complete, total dipshits then, if they think Trump will be an improvement -- for the US or anyone else.
Luckily, they aren't voting here.
So with that having been said, and with I promise more respect than this question will make it sound like I have for your viewpoint: what is it, exactly, that makes your doubts about this attribution being politically motivated more credible than the (extremely common) doubts Trump supporters have that Hurricane Matthew wasn't generated by Obama's wind farms to suppress voter registration?
The hack seems politically motivated; no one can say with 100% assurance that it was caused by Russia; the DNC is a private organization, in any event, why should the citizens of the US be drawn into a war with a nuclear armed foe over their poor cyber security?