All Valorant streams now have drops enabled. In short, you can now watch any stream — as long as it's Valorant — and have a chance to get a beta access. Riot Games say they're conscious of the demand and after having probably increased server capacity by 25% to accommodate more testers, they're now putting an end to the relative exclusivity of certain streamers.
Anna & Joe from Riot Games also point out that if you're in an area that doesn't yet have access to the closed beta, you just have to be patient. They say they're moving as fast as they can with regions such as Brazil, Latin America and Korea.
There is currently no information about the end of the Valorant beta. It must be said that the game is still quite full of various bugs. If the Riot Games teams still have some work to do, let's not forget the probably complicated sanitary context for them who expect to be on schedule and respect the announced release date.