They’re race bikes with mirrors and blinkers to make them road legal, that’s why. :lol
If you don’t mind the maintenance, I’d go for the SMR 510 Husky. The new ones are even FI, too.
Husky makes the 610SM, which has the friendly maintenance schedule just like the dr-z, only I won’t make fun of you for riding it. :lol The drz is garbage, IMO. But maybe I was just used to my 510 when I rode one.