The funny thing though, is that "government" and "transparent" mostly doesn't go well together. If anything, transparency is probably the last thing they had in mind if they were to create their own digital money. Instead, it's most probably for surveillance purposes. You'd be dreaming if you think the government wanted decentralization.
This is correct, and what some governments are doing is implement blockchain but not decentralization. That is, they want to ride the blockchain buzzword but not truly commit to real transparency.
If they make a voting system using blockchain, they would need to release the source code and let anyone run nodes, and the equivalent to the wallet which what would allow unique votes. Most projects using the "blockchain" word don't do this, they are kept "internal" and centralized.
Of course having projects using "blockchain" has nothing to do with accepting "Bitcoin technology", they are just cherry picking one of the components.