Crypto acceptance by governments is what will legitimize it enough to eventually bring it mainstream, I'm very glad there are forces within governments pushing for this as a lot of the recent news, particularly in Asia have been quite negative towards cryptocurrencies in general.
Legitimization does not exactly equate to crypto becoming mainstream but it would definitely bring some ease for the crypto users within the country. This may bring about some spotlight over crypto once the news would go out but it may not become as popular just yet. This has definitely brought some positivity over crypto since the country has chosen to be more open and accepting.