Although I tend to agree with you, are you high enough up in the company to know how Tencent has influenced the company? Even so, much like you I'm skeptical that investing in startups is part of some illuminati scheme to spread political influence. I think people on the internet just love to jump on the bandwagon, and right now being associated with Russia is a controversial subject.
I think people with money want to invest in order to make more money. Unless people can point to Russian money somehow having an obvious pattern on startup investing, there just doesn't seem to be anything out of the ordinary (rich people trying to get richer).