It's upto the fiat governments to decide.
But primoting Bitcoin in this manner will have little to negative benefit to the Bitcoin Network unless they use it decentrally which the governments will unlikely approve since they'll have almost no control of its usage in their area of jurisdictions. And they can't be allowed to control the Bitcoin system for this reason.

The best way to promote Bitcoin is among people who want to free from a failing/oppressive centralized financial system. They should mostly be your target. And they should be encouraged to use Bitcoin in decentralized manner which is more beneficial to the Bitcoin system. And they can connect with one another offline and online, in decentralized manner, to form a parallel worldwide communities