I removed mine as small as the risk may be of the bag rupturing, it then blocks up the heater matrix.
VW did away with the silica bag, which "tops up" the antifreeze, in later model years anyway and changed the spec of the anti freeze to compensate.
All very good if it fails whilst in warranty, but out of warranty and your looking at a big bill, and i personally wouldn't want anyone removing the dash in my car.
I would rather top up the anti freeze every couple of years than potentially have to have the heater matrix replaced and all the associated problems that will inevitably come with having the dashboard out.
