Maybe tenors are seen as worth developing because it is so much more rare than a male baritone? I’m not sure your hypothesis has any weight, but I do sympathiz

Maybe tenors are seen as worth developing because it is so much more rare than a male baritone? I’m not sure your hypothesis has any weight, but I do sympathize with you ;). OTOH, I suspect many of the falsetto and high male voices are more successful in an autotune era because of the sweet sauce that even a small application of autotune gives a vocal recording. The Weeknd’s mixing engineer has professed to using a little autotune on everything because that’s what people are used to hearing, i would be surprised if other popular artists aren’t using at least a little autotune for flavor. It really stabilizes and adds a sweetness to an otherwise shaky or weak falsetto / high male head voice.