Yes looks a bit random :-) But don't forget "MaxLevelItems"->3 means at every page you select just 3 hyperlinks, while in reality there are many more. And to represent a Wikipedia article by its links you probably need just links of that page not the next level ones. The following paints a better picture:

syn="Wolfram Mathematica";
synlinks=WikipediaData[syn,"LinksRules","MaxLevelItems"->1000,"MaxLevel"->1];

WordCloud[DeleteStopwords[ToLowerCase[StringRiffle[synlinks]]],
ScalingFunctions->(#^.01&),WordOrientation->{{-Pi/4,Pi/4}},AspectRatio->1/2]

Thanks Vitaliy! I decided to check out what they think about Wolfram Mathematica. The result was unexpected, but reasonable.