Yes, you can indeed drill out the rivets and go about getting a more period solution, but the at what cost in time and labor? At that point, why not just buy the correct ones available from a number of sources. I know I have gone on the record stating this is an acceptable substitution, however lets not forget that correct reproductions ARE available from several sources such as the Village Tinsmith, Jarnagins, Townsends, and a number of field merchants. This Wal Mart product is a step above the usual modern substitutions such as blue speckled enamelware and cast iron pans, but it is still a modern "not-quite-right-but-almost-there" item.
Moderator and Sewer of Historical Clothing and Tall Tales
"But our opportunity to learn and grow, to communicate the richness of the lives that have gone before us, that does not change. We do not outgrow it. It does not tatter and fall apart in our hands..." -Mrs. Terre Lawson, 2010