Let's say we live in a perfect world, where citizens still made the decisions on political matters and you as an individual were given the choice to vote on a subject.
Actually, there are countries where citizens have the ability to vote on (nearly) every political decision (e.g. swiss).
I, for my part, would always define bitcoin as a
currency. Simply because:
(1) satoshi invented BTC as a digital currency, not an object to buy.
(2) Bitcoins value (not price) is defined by the usage. And the usage (as a currency) is to transfer wealth in a secure manner within seconds and with low fees.
Governments probably don't want to accept bitcoin as a currency because this would be the first step (realizing BTC is a currency) towards a global currency
BTC.
In the long-term the political decision (whether currency or commodity) won't have a noteworty influence on BTC's adoption-/usage- rate.