It is a matter of importance when it comes to cash flow, religions that gain converts proper while those loosing converts see revenues go down. That is sometimes masked by very effective marketing among a decreasing support base, getting blood from the turnip.
The evidence though seems to show that in general, education reduces the acceptance of religions of all faiths, but those with a teaching that is totally counter to reality, ones like the Biblical Creationists see the greatest losses and so the trend is to try to set up avoidance systems to keep their members from exposure to reality.
Anyone so limited that they can only spell a word one way is severely handicapped!