Bitcoin actually doesn't require approval to be used anywhere. You can use it as long as you have internet connection and a device.
Countries "approving" bitcoin just makes it actually legal to use and accept for merchants. correct me if I'm wrong
Yes you are totally right, i think the exactly same. The goverments don't want to miss taxes about cryptocurrencies anymore. Everyone is using bitcoin nowadays and the number is going high everyday. I think in near future all the goverments will accept crypto moneys and will have the taxes. It will be the way i guess..
The legality of bitcoin is very much the governmental way to make money of cryptocurrency. Its a legal, go signal for businesses to adopt crypto while at the same time some of this share will go to governments via the tax system.