As coop says,get a cable luber,some cable life and properly lube it-it does make a difference.
My RM 125 had a clutch pull that a baby could handle-so did both KTM's and the Berg.The YZ250's are considerably harder(250's always pull harder than 125's).Before I did what I posted to mine,I found I couldn't two finger it consistently as the pull was too stiff.
Worn clutch springs will make it pull easier.A hydro clutch is no guarantee of an easy pull or a good feel,it all depends on the ratio.
You may have to just deal with it somewhat.YZ's are a man's bike.If you need something more girly-look at the Euro's