rsvman2
It certainly appears so, though they do still uphold their stated stance that they will not mandate vaccination, believing the matter a personal choice.
The move to end on site testing by the end of June was written into the last batch of changes/updates implemented on April 21. So, possibly/likely, they felt it was a perk which would provide enough time to prevent any measure of hardship for those intending to eventually be vaccinated. That time frame seems about right given the busy schedules, the age of many of its members and the delayed vaccination scheduling for younger aged groups, availability of appointments (often two), possible preferences for manufacturer, differences between states and/or countries, as well as allowing for a 14 day period after their last shot.
The one thing I could not find (which definitely does not mean it does not exist) ... is the option for players to provide proof of having already had Covid. So far, all I've read is that players will be required to provide either: proof of vaccination, or proof of a current negative test.