Nope, in this case, aluminum (it's metal) case boards have a risk for ESD.

In my case, I'll feel buzzy when I'm touching my Vega when I'm not grounded. Makes me think that the board was "susceptible" to ESD. Even though it never broken once on me.

More metal, more risk to conduct static discharge. Even then, I don't think it's accurate to just say "swap to polycarbonate or plastic case" to simply alleviate the issue.

Then again, I am no electrical engineer. Probably helps a little that I have little to no carpet flooring at my current residence plus the wood flooring probably helped.