"Hinduism as practised today is full of superstitions, strange rituals that emphasize symbol over substance, and belifs that defy all logic and common sense."
I think you've missed the point of this article. The author is not urging people to adopt all Hindu practices, rituals etc. All religions today can be said to defy logic and commonsense. The author clearly said some Americans are becoming more like Hindus when it comes to the concept of "Ekam sat vipra bahauda vadanti" (that which is one is called many names by the sages).
Rituals are just a means to the end. Even atheists have rituals and superstitions, just not of the religious kind. Whilst all Hindus may not be Vedic scholars, the diversity and variety and flexibility and elasticity of their beliefs, rituals etc. allows them to intuitively tap into this concept and be tolerant of a myriad ways of expressing devotion to the ONE. That's why there is no one supreme religious figure in Hinduism (or rather Sanathana Dharma), no central holy book that is prescribed, no one way to "salvation" etc. This is not to say that Hinduism is perfect or without flaws or hasn't acquired traditions that are not that beneficial, but its core concepts, the ones that stand the test of time and that will never change, are indeed a good lesson for the world when compared to some of the core concept (essentially what is required to achieve salvation or nirvana or whatever you want to call it) of other major faiths.
The lesson should be that we can all learn from one another and take the best of all faiths/no faith.