The issue with humidity and electronics is condensation, it's not like how it affects warm blooded animals. The moisture also gets absorbed by some components shortening their life. Low humidity is good but it has nothing to do with cooling perrformance.
High humidity environments is an ironic case where higher temperatures are better to keep the relative humidity lower and protect against condensation.
So with free air, there's no practical way to combat the humidity is there? If I'm moving a ton of air through my setup, even with a big dehumidifier the air would come and go before it had the opportunity to be dehumidified?