As much as the value of Bitcoin has changed like nothing else, the future of Bitcoin is so bright that many countries are accepting BTC as currency. So if you invest in Bitcoin it will never be a scam, and you are sure to earn a lot of money from it. And investing in bitcoins definitely requires enough patience, if you don't have patience you will never be successful, and you will have to wait for a long time to get profit.
But about many countries that accept Bitcoin as a currency, it is not an actual fact, only a few such as El Salvador have actually adopted Bitcoin as a legal means of payment and several other countries are still in a gray and unclear zone and even many countries have completely banned Bitcoin.
Remember that different countries will have different rules that apply to Bitcoin.
Regulations that limit Bitcoin will be stricter if the government does not fully allow Bitcoin to work as a currency for payments.
Still lucky enough in my country Indonesia Bitcoin is a commodity asset and should not be more than that.