I think Bitcoin is not legit in some countries but in some countries, Bitcoin is legit and use for all purchases. Also, there are lots of legit Bitcoin mining website and with the help of that website, you can earn free bitcoin. There is some legit website like
Multimining.website. In countries like U.S.A, Canada, Australia, China and Russia you can purchase any product with the help of Bitcoin.
That's right what you say, that legitimate bitcoin is based on that country in regulating bitcoin. because many countries have advanced and legalized bitcoin and can be used as legitimate transactions. but not a few countries still have not accepted and prohibited as legitimate transactions. so that you do not become confused you better enter the forum in your country and can ask there about bitcoin and the policies that have been made.