Well, that sounds more like Hinduism than Buddhism to me. I'm not an expert on Eastern religions, but I believe basic Buddhism does posit the dependent arising of events as an objective fact, which makes Buddhism consistent with scientific talk of causality. It's the complexity of those causes that conflicts with the simplistic meaning we seek in our egoistic conceptions of those events.

The sum of those conceptions would be the subjective, illusory world of maya or matrix in which we effectively live. The Buddha dwells rather in an alienated/transcendent state of paradoxical awareness of how none of those egoistic conceptions matters, and how none of those biased posits is fundamental, is capable of saving us, or is worth craving.

In any case, there are plenty of developments and forms of Buddhism, so at least one of them might amount to metaphysical idealism. Regarding your quotation, the question would be what word is translated as "world."