If the factory sights are obtained from a Vendor, there's not a lot S&W can do about the Vendor's QC (other than finding another Vendor.
If though the sights are made In-House, then yes, they should address it, since it's simply a matter of the sight not being completely degreased prior to painting the dot into the socket.
Every manufacturer has this problem periodically, you can find similar threads on all the Forums.
Q: How does one insure that a Thread will NEVER get read?
A: Make it a Sticky.