I didn't hesitate ordering Hulk. As far as the arms, I will wait to be concerned after we hear what they are actually made of. But since someone posted something about the arms possibly being some sort of PVC, I decided to look it up. I'd suggest you do too.
We know PVC is used a lot in pipe work. I looked up PVC and flexible PVC and everything I read basically said, PVC is often used underground ( pipe line, swimming pools, man made ponds, etc ) because of its resistance to deterioration. One article I read said they used flixible PVC for an oil pipeline. And it lasted 10 years before deterioration started. And it usually won't start breaking down unless it reaches over 140 degrees.
If the arms are PVC, I won't be worried a bit!