Does learning on tailwheel make you a better pilot? or does it just mean you can fly a tailwheel??
BOTH!!
Just started my taildragger conversion and I'm learning lots about when and how to use the two things on the ends of my legs that have never really been needed before in the old Cherokee... Cherokees don't have rudder pedals, they have FOOTRESTS!! Would have loved to start off in them - I do know someone who, in the last year or so, first soloed in a Tiger Moth...
It'd just get you into good habits from the start.