Yes it is, but once you learn the to use the weight to your advantage, it makes taking corners a real blast. I never chopped my Sporty, I put dog bones with short bars and left it stock. I was skinny too, when I bought mine. I weighed 145#. But I did learn to cope and I had lots of experience from my other bikes. I never dropped mine (when someone was looking).
I do love my sporty. I can do without the batter casing poking me in the leg, but for a first bike it's great. The road up Mt. Rainier in the summer is fabulous on a bike.