I don't usually discuss matters of faith in this forum since it's pretty far off topic.
However since you asked. Most christian faiths would say yes. The form is less important than the intended meaning for a prayer. And God would be perfectly capable of understanding the index form since He is considered to be Omniscient. QED: index form is perfectly fine.
Other religions may differ as to whether the form is less or more important than the intended content so I can't say whether principle transfers or not.
With modern computers we should be able to recite religious texts fast and efficiently. Even a Raspberry PI with a solar panel could probably get up to some decent speed compared to a prayer wheel. Not sure it helps you reach nirvana though. :)
Well since "Nirvana" is a somewhat shared concept in several religions. I know of atleast one religion in which the point is to achieve "automatic prayers at super fast speeds" and obviously that isn't by rapping verses. it even transcends reciting the index or "thinking" of it.
Legend has it that a certain prime follower of this religion could finish the entire scripture tens of thousands of times while getting on to a horse.
However since you asked. Most christian faiths would say yes. The form is less important than the intended meaning for a prayer. And God would be perfectly capable of understanding the index form since He is considered to be Omniscient. QED: index form is perfectly fine.
Other religions may differ as to whether the form is less or more important than the intended content so I can't say whether principle transfers or not.